diff --git a/lib/core/design_system/components/custom_icon_button.dart b/lib/core/design_system/components/custom_icon_button.dart
index d9255a3f..b615825e 100644
--- a/lib/core/design_system/components/custom_icon_button.dart
+++ b/lib/core/design_system/components/custom_icon_button.dart
@@ -2,8 +2,15 @@ import 'package:flutter/material.dart';
 import 'package:ondo/core/design_system/app_colors.dart';
 import 'package:ondo/core/design_system/app_layout.dart';
 
-typedef FavoriteAction = void Function(bool isFavorite, int total);
-typedef BookmarkAction = void Function(bool isBookmark, int total);
+typedef FavoriteAction = void Function(
+    bool isFavorite,
+    int total,
+    );
+
+typedef BookmarkAction = void Function(
+    bool isBookmark,
+    int total,
+    );
 
 class CustomIconButton extends StatefulWidget {
   const CustomIconButton({
@@ -23,62 +30,65 @@ class CustomIconButton extends StatefulWidget {
   final int total;
   final bool initialIsSelected;
   final Color activeColor;
-  final void Function(bool isSelect, int total)? action;
+  final void Function(
+      bool isSelect,
+      int total,
+      )? action;
 
   @override
   State<CustomIconButton> createState() => _CustomIconButtonState();
 }
 
 class _CustomIconButtonState extends State<CustomIconButton> {
-  late int total;
-  late bool isSelect;
+  late bool _isSelected;
+  late int _total;
 
   @override
   void initState() {
     super.initState();
-    total = widget.total;
-    isSelect = widget.initialIsSelected;
+    _isSelected = widget.initialIsSelected;
+    _total = widget.total;
   }
 
   @override
   void didUpdateWidget(CustomIconButton oldWidget) {
     super.didUpdateWidget(oldWidget);
-    if (oldWidget.total != widget.total) {
-      total = widget.total;
-    }
+    // 외부(컨트롤러)에서 갱신된 값이 들어오면 내부 상태에 반영한다.
     if (oldWidget.initialIsSelected != widget.initialIsSelected) {
-      isSelect = widget.initialIsSelected;
+      _isSelected = widget.initialIsSelected;
+    }
+    if (oldWidget.total != widget.total) {
+      _total = widget.total;
     }
   }
 
+  void _onTap() {
+    setState(() {
+      _isSelected = !_isSelected;
+      _total += _isSelected ? 1 : -1;
+    });
+
+    widget.action?.call(_isSelected, _total);
+  }
+
   @override
   Widget build(BuildContext context) {
     return Row(
       mainAxisSize: MainAxisSize.min,
       children: [
         GestureDetector(
-          onTap: () {
-            setState(() {
-              isSelect = !isSelect;
-              isSelect ? total += 1 : total -= 1;
-            });
-            widget.action?.call(isSelect, total);
-          },
+          onTap: _onTap,
           child: Image.asset(
             widget.imagePath,
-            color: isSelect ? widget.activeColor : AppColors.gray50,
+            color: _isSelected ? widget.activeColor : AppColors.gray50,
             height: widget.iconSize,
             width: widget.iconSize,
           ),
         ),
         AppGap.h4,
         Text(
-          "$total",
-          style: TextStyle(
-            fontSize: widget.totalStyle.fontSize,
-            fontWeight: widget.totalStyle.fontWeight,
-            color: AppColors.gray60,
-          ),
+          "$_total",
+          style: widget.totalStyle.copyWith(color: AppColors.gray60),
         ),
       ],
     );
diff --git a/lib/core/router/app_router.dart b/lib/core/router/app_router.dart
index 0569cb6d..66360b55 100644
--- a/lib/core/router/app_router.dart
+++ b/lib/core/router/app_router.dart
@@ -137,7 +137,7 @@ final GoRouter appRouter = GoRouter(
           Get.delete<PostViewController>(force: true);
         }
 
-        PostViewBinding(postId, state.extra as bool? ?? false).dependencies();
+        PostViewBinding(postId).dependencies();
 
         return PostDetailScreen();
       },
diff --git a/lib/core/router/bindings/community_binding.dart b/lib/core/router/bindings/community_binding.dart
index 5957d133..21bce934 100644
--- a/lib/core/router/bindings/community_binding.dart
+++ b/lib/core/router/bindings/community_binding.dart
@@ -1,7 +1,7 @@
 import 'package:get/get.dart';
 import 'package:ondo/core/router/bindings/search_binding.dart';
-import 'package:ondo/domain/usecases/post/get_cached_liked_post_ids_use_case.dart';
 import 'package:ondo/domain/usecases/post/like_post_usecase.dart';
+import 'package:ondo/domain/usecases/post/liked_post_use_case.dart';
 import 'package:ondo/domain/usecases/post/load_recommend_post_list_use_case.dart';
 import 'package:ondo/domain/usecases/post/save_post_like_local_use_case.dart';
 import 'package:ondo/domain/usecases/post/unlike_post_usecase.dart';
@@ -11,17 +11,16 @@ import 'package:ondo/presentation/search/states/search_page_state.dart';
 class CommunityBinding extends Bindings {
   @override
   void dependencies() {
-    /// 검색 관련 의존성
     SearchBinding(pageState: SearchPageState.community).dependencies();
 
     Get.lazyPut<CommunityController>(
-      () => CommunityController(
+          () => CommunityController(
         likeUseCase: Get.find<LikePostUseCase>(),
         unlikeUseCase: Get.find<UnlikePostUseCase>(),
         getRecommendPostsUseCase: Get.find<LoadRecommendPostListUseCase>(),
         savePostLikeLocalUseCase: Get.find<SavePostLikeLocalUseCase>(),
-        getCachedLikedPostIdsUseCase: Get.find<GetCachedLikedPostIdsUseCase>(),
+        likedPostUseCase: Get.find<LikedPostUseCase>(),
       ),
     );
   }
-}
+}
\ No newline at end of file
diff --git a/lib/core/router/bindings/home_binding.dart b/lib/core/router/bindings/home_binding.dart
index 20fe4d7a..cd8a46d8 100644
--- a/lib/core/router/bindings/home_binding.dart
+++ b/lib/core/router/bindings/home_binding.dart
@@ -3,8 +3,8 @@ import 'package:ondo/core/router/bindings/search_binding.dart';
 import 'package:ondo/domain/usecases/post/load_recent_popular_post_list_use_case.dart';
 import 'package:ondo/domain/usecases/post/load_recommend_post_list_use_case.dart';
 import 'package:ondo/domain/usecases/user/load_recommend_users_use_case.dart';
-import 'package:ondo/domain/usecases/post/get_cached_liked_post_ids_use_case.dart';
 import 'package:ondo/domain/usecases/post/like_post_usecase.dart';
+import 'package:ondo/domain/usecases/post/liked_post_use_case.dart';
 import 'package:ondo/domain/usecases/post/post_search_use_case.dart';
 import 'package:ondo/domain/usecases/post/save_post_like_local_use_case.dart';
 import 'package:ondo/domain/usecases/post/unlike_post_usecase.dart';
@@ -12,17 +12,15 @@ import 'package:ondo/domain/usecases/user/user_search_use_case.dart';
 import 'package:ondo/presentation/home/controllers/home_controller.dart';
 import 'package:ondo/presentation/search/states/search_page_state.dart';
 
-
 class HomeBinding extends Bindings {
   @override
   void dependencies() {
     SearchBinding(pageState: SearchPageState.home).dependencies();
 
-    ///HomeController 등록
     Get.lazyPut(
-      () => HomeController(
+          () => HomeController(
         loadRecentPopularPostListUseCase:
-            Get.find<LoadRecentPopularPostListUseCase>(),
+        Get.find<LoadRecentPopularPostListUseCase>(),
         postSearchUseCase: Get.find<PostSearchUseCase>(),
         loadRecommendPostsUseCase: Get.find<LoadRecommendPostListUseCase>(),
         loadRecommendUsersUseCase: Get.find<LoadRecommendUsersUseCase>(),
@@ -30,8 +28,8 @@ class HomeBinding extends Bindings {
         likePostUseCase: Get.find<LikePostUseCase>(),
         unlikePostUseCase: Get.find<UnlikePostUseCase>(),
         savePostLikeLocalUseCase: Get.find<SavePostLikeLocalUseCase>(),
-        getCachedLikedPostIdsUseCase: Get.find<GetCachedLikedPostIdsUseCase>(),
+        likedPostUseCase: Get.find<LikedPostUseCase>(),
       ),
     );
   }
-}
+}
\ No newline at end of file
diff --git a/lib/core/router/bindings/navigation_binding.dart b/lib/core/router/bindings/navigation_binding.dart
index bfa7f6c6..21e1418f 100644
--- a/lib/core/router/bindings/navigation_binding.dart
+++ b/lib/core/router/bindings/navigation_binding.dart
@@ -15,21 +15,23 @@ import 'package:ondo/data/datasource/base/auth_local_datasource.dart';
 import 'package:ondo/data/network/clients/auth_client.dart';
 import 'package:ondo/presentation/navigation/controllers/navigation_controller.dart';
 
+
 class NavigationBinding extends Bindings {
   @override
   void dependencies() {
     Get.lazyPut<AuthRemoteDatasource>(
-      () => AuthRemoteDatasource(Env.apiBaseUrl),
+          () => AuthRemoteDatasource(Env.apiBaseUrl),
       fenix: true,
     );
+
     Get.lazyPut<AuthLocalDatasource>(
-      () => AuthLocalDatasourceImpl(),
+          () => AuthLocalDatasourceImpl(),
       fenix: true,
     );
 
     /// 인증 token을 포함하는 client 등록
     Get.lazyPut(
-      () => AuthClient(
+          () => AuthClient(
         localDatasource: Get.find<AuthLocalDatasource>(),
         remoteDatasource: Get.find<AuthRemoteDatasource>(),
         onAuthFailed: () => appRouter.go(RoutePaths.login),
@@ -38,7 +40,11 @@ class NavigationBinding extends Bindings {
     );
 
     /// 전 화면 공통 controller 등록
-    Get.lazyPut<NavigationController>(() => NavigationController());
+    Get.lazyPut<NavigationController>(
+          () => NavigationController(),
+    );
+
+    NotificationBinding().dependencies();
 
     NotificationBinding().dependencies();
     ReportBinding().dependencies();
@@ -51,4 +57,4 @@ class NavigationBinding extends Bindings {
     ChatBinding().dependencies();
     ProfileBinding().dependencies();
   }
-}
+}
\ No newline at end of file
diff --git a/lib/core/router/bindings/post_binding.dart b/lib/core/router/bindings/post_binding.dart
index 865b63b2..db20b677 100644
--- a/lib/core/router/bindings/post_binding.dart
+++ b/lib/core/router/bindings/post_binding.dart
@@ -4,8 +4,8 @@ import 'package:ondo/data/datasource/post/post_remote_datasource.dart';
 import 'package:ondo/data/network/clients/auth_client.dart';
 import 'package:ondo/data/repositories/post/post_repository_impl.dart';
 import 'package:ondo/domain/usecases/post/bookmark_post_usecase.dart';
-import 'package:ondo/domain/usecases/post/get_cached_liked_post_ids_use_case.dart';
 import 'package:ondo/domain/usecases/post/like_post_usecase.dart';
+import 'package:ondo/domain/usecases/post/liked_post_use_case.dart'; // ← 추가
 import 'package:ondo/domain/usecases/post/load_recent_popular_post_list_use_case.dart';
 import 'package:ondo/domain/usecases/post/load_recommend_post_list_use_case.dart';
 import 'package:ondo/domain/usecases/post/post_search_use_case.dart';
@@ -18,68 +18,57 @@ class PostBinding extends Bindings {
   @override
   void dependencies() {
     Get.lazyPut<PostRemoteDatasource>(
-      () => PostRemoteDatasource(
-        Get.find<AuthClient>(),
-      ),
+          () => PostRemoteDatasource(Get.find<AuthClient>()),
     );
 
     Get.lazyPut<PostLocalDatasource>(
-      () => PostLocalDatasource(),
+          () => PostLocalDatasource(),
     );
 
-    // Post Repository
     Get.lazyPut<PostRepositoryImpl>(
-      () => PostRepositoryImpl(
+          () => PostRepositoryImpl(
         Get.find<PostRemoteDatasource>(),
         Get.find<PostLocalDatasource>(),
       ),
     );
-    Get.lazyPut<LikePostUseCase>(
-      () => LikePostUseCase(
-        Get.find<PostRepositoryImpl>(),
-      ),
+
+    Get.lazyPut<LikePostUseCase>( // ← 서버 좋아요 요청
+          () => LikePostUseCase(Get.find<PostRepositoryImpl>()),
+    );
+
+    Get.lazyPut<LikedPostUseCase>( // ← 로컬 캐시 확인
+          () => LikedPostUseCase(Get.find<PostRepositoryImpl>()),
     );
 
     Get.lazyPut<UnlikePostUseCase>(
-      () => UnlikePostUseCase(
-        Get.find<PostRepositoryImpl>(),
-      ),
+          () => UnlikePostUseCase(Get.find<PostRepositoryImpl>()),
     );
 
-    // 추가된 북마크 UseCase
     Get.lazyPut<BookmarkPostUseCase>(
-      () => BookmarkPostUseCase(
-        Get.find<PostRepositoryImpl>(),
-      ),
+          () => BookmarkPostUseCase(Get.find<PostRepositoryImpl>()),
     );
 
     Get.lazyPut<UnbookmarkPostUseCase>(
-      () => UnbookmarkPostUseCase(
-        Get.find<PostRepositoryImpl>(),
-      ),
+          () => UnbookmarkPostUseCase(Get.find<PostRepositoryImpl>()),
     );
 
     Get.lazyPut<PostSearchUseCase>(
-      () => PostSearchUseCase(Get.find<PostRepositoryImpl>()),
+          () => PostSearchUseCase(Get.find<PostRepositoryImpl>()),
     );
 
     Get.lazyPut<SavePostLikeLocalUseCase>(
-      () => SavePostLikeLocalUseCase(Get.find<PostRepositoryImpl>()),
-    );
-    Get.lazyPut<GetCachedLikedPostIdsUseCase>(
-      () => GetCachedLikedPostIdsUseCase(Get.find<PostRepositoryImpl>()),
+          () => SavePostLikeLocalUseCase(Get.find<PostRepositoryImpl>()),
     );
 
     Get.lazyPut(
-      () => LoadRecommendPostListUseCase(Get.find<PostRepositoryImpl>()),
+          () => LoadRecommendPostListUseCase(Get.find<PostRepositoryImpl>()),
     );
 
     Get.lazyPut(
-      () => LoadRecentPopularPostListUseCase(Get.find<PostRepositoryImpl>()),
+          () => LoadRecentPopularPostListUseCase(Get.find<PostRepositoryImpl>()),
     );
 
-    Get.lazyPut(
-      () => PostController(),
-    );
+    /// 좋아요 상태 동기화 이벤트를 전역으로 유지해야 하므로 permanent 등록
+    Get.put(PostController(), permanent: true);
   }
-}
+}
\ No newline at end of file
diff --git a/lib/core/router/bindings/post_view_binding.dart b/lib/core/router/bindings/post_view_binding.dart
index ce74e1a6..6aa0acd0 100644
--- a/lib/core/router/bindings/post_view_binding.dart
+++ b/lib/core/router/bindings/post_view_binding.dart
@@ -2,6 +2,8 @@ import 'package:get/get.dart';
 import 'package:ondo/domain/usecases/comment/create_comment_usecase.dart';
 import 'package:ondo/domain/usecases/comment/delete_comment_usecase.dart';
 import 'package:ondo/domain/usecases/comment/get_comments_usecase.dart';
+import 'package:ondo/domain/usecases/post/liked_post_use_case.dart';
+import 'package:ondo/domain/usecases/post/save_post_like_local_use_case.dart';
 
 import '../../../data/datasource/comment/comment_remote_datasource.dart';
 import '../../../data/network/clients/auth_client.dart';
@@ -21,76 +23,60 @@ import '../../../presentation/post/controllers/post_view_controller.dart';
 
 class PostViewBinding extends Bindings {
   final int postId;
-  final bool isFavorite;
 
-  PostViewBinding(
-    this.postId, [
-    this.isFavorite = false,
-  ]);
+  PostViewBinding(this.postId);
 
   @override
   void dependencies() {
     // Post UseCases
     Get.lazyPut<GetPostDetailUseCase>(
-      () => GetPostDetailUseCase(
-        Get.find<PostRepositoryImpl>(),
-      ),
+          () => GetPostDetailUseCase(Get.find<PostRepositoryImpl>()),
     );
 
     Get.lazyPut<CreatePostUseCase>(
-      () => CreatePostUseCase(
-        Get.find<PostRepositoryImpl>(),
-      ),
+          () => CreatePostUseCase(Get.find<PostRepositoryImpl>()),
     );
 
     Get.lazyPut<UpdatePostUseCase>(
-      () => UpdatePostUseCase(
-        Get.find<PostRepositoryImpl>(),
-      ),
+          () => UpdatePostUseCase(Get.find<PostRepositoryImpl>()),
     );
 
     Get.lazyPut<DeletePostUseCase>(
-      () => DeletePostUseCase(
-        Get.find<PostRepositoryImpl>(),
-      ),
+          () => DeletePostUseCase(Get.find<PostRepositoryImpl>()),
+    );
+
+    Get.lazyPut<SavePostLikeLocalUseCase>(
+          () => SavePostLikeLocalUseCase(Get.find<PostRepositoryImpl>()),
     );
 
     // Comment DataSource
     Get.lazyPut<CommentRemoteDataSource>(
-      () => CommentRemoteDataSourceImpl(
-        Get.find<AuthClient>(),
-      ),
+          () => CommentRemoteDataSourceImpl(Get.find<AuthClient>()),
     );
 
     // Comment Repository
     Get.lazyPut<CommentRepositoryImpl>(
-      () => CommentRepositoryImpl(
+          () => CommentRepositoryImpl(
         remoteDataSource: Get.find<CommentRemoteDataSource>(),
       ),
     );
 
     // Comment UseCases
     Get.lazyPut<GetCommentsUseCase>(
-      () => GetCommentsUseCase(
-        Get.find<CommentRepositoryImpl>(),
-      ),
+          () => GetCommentsUseCase(Get.find<CommentRepositoryImpl>()),
     );
 
     Get.lazyPut<CreateCommentUseCase>(
-      () => CreateCommentUseCase(
-        Get.find<CommentRepositoryImpl>(),
-      ),
+          () => CreateCommentUseCase(Get.find<CommentRepositoryImpl>()),
     );
 
     Get.lazyPut<DeleteCommentUseCase>(
-      () => DeleteCommentUseCase(
-        Get.find<CommentRepositoryImpl>(),
-      ),
+          () => DeleteCommentUseCase(Get.find<CommentRepositoryImpl>()),
     );
 
     // Controller
     Get.lazyPut<PostViewController>(
-      () => PostViewController(
+          () => PostViewController(
         postId: postId,
         getPostDetailUseCase: Get.find<GetPostDetailUseCase>(),
         updatePostUseCase: Get.find<UpdatePostUseCase>(),
@@ -102,7 +88,9 @@ class PostViewBinding extends Bindings {
         getCommentsUseCase: Get.find<GetCommentsUseCase>(),
         createCommentUseCase: Get.find<CreateCommentUseCase>(),
         deleteCommentUseCase: Get.find<DeleteCommentUseCase>(),
+        likedPostUseCase: Get.find<LikedPostUseCase>(),
+        savePostLikeLocalUseCase: Get.find<SavePostLikeLocalUseCase>(),
       ),
     );
   }
-}
+}
\ No newline at end of file
diff --git a/lib/data/datasource/post/post_local_datasource.dart b/lib/data/datasource/post/post_local_datasource.dart
index eba8fc9a..ae25a130 100644
--- a/lib/data/datasource/post/post_local_datasource.dart
+++ b/lib/data/datasource/post/post_local_datasource.dart
@@ -4,6 +4,7 @@ class PostLocalDatasource {
   static const String _likedPostsKey = 'liked_post_ids';
 
   SharedPreferences? _prefs;
+  Set<int>? _cachedLikedIds;
 
   Future<SharedPreferences> _getPrefs() async {
     return _prefs ??= await SharedPreferences.getInstance();
@@ -19,6 +20,8 @@ class PostLocalDatasource {
       likedIds.remove(postId);
     }
 
+    _cachedLikedIds = likedIds;
+
     await prefs.setStringList(
       _likedPostsKey,
       likedIds.map((id) => id.toString()).toList(),
@@ -26,8 +29,17 @@ class PostLocalDatasource {
   }
 
   Future<Set<int>> getLikedPostIds() async {
+    if (_cachedLikedIds != null) return _cachedLikedIds!;
+
     final prefs = await _getPrefs();
     final ids = prefs.getStringList(_likedPostsKey);
-    return (ids ?? []).map((id) => int.tryParse(id)).whereType<int>().toSet();
+    _cachedLikedIds =
+        (ids ?? []).map((id) => int.tryParse(id)).whereType<int>().toSet();
+    return _cachedLikedIds!;
+  }
+
+  Future<bool> likedPost(int postId) async {
+    final ids = await getLikedPostIds();
+    return ids.contains(postId);
   }
-}
+}
\ No newline at end of file
diff --git a/lib/data/repositories/post/post_repository_impl.dart b/lib/data/repositories/post/post_repository_impl.dart
index 9c5d59a1..89c3bdf1 100644
--- a/lib/data/repositories/post/post_repository_impl.dart
+++ b/lib/data/repositories/post/post_repository_impl.dart
@@ -23,29 +23,17 @@ class PostRepositoryImpl implements PostRepository {
   @override
   Future<List<PostRankEntity>> loadRecentPopularPostList() async {
     final json = await _remoteDatasource.getRecentPopularPostList();
-    final data =
-        json
-            ?.map(
-              (e) => PostRankModel.fromJson(e),
-            )
-            .toList() ??
-        [];
-
-    return data
-        .map(
-          (e) => PostRankEntity.fromPostRankModel(e),
-        )
-        .toList();
+    final data = json?.map((e) => PostRankModel.fromJson(e)).toList() ?? [];
+    return data.map((e) => PostRankEntity.fromPostRankModel(e)).toList();
   }
 
   @override
   Future<ListableWrapper<PostEntity>> loadRecommendPostList(
-    int page,
-    int size,
-  ) async {
+      int page,
+      int size,
+      ) async {
     final model = ListRequestModelBasePage(size: size, page: page);
     final json = await _remoteDatasource.getRecommendPostList(model);
-
     final data = PostDataModel.fromJson(json);
 
     return ListableWrapper(
@@ -54,11 +42,7 @@ class PostRepositoryImpl implements PostRepository {
       totalElements: data.totalElements,
       totalPages: data.totalPages,
       last: data.last,
-      content: data.content
-          .map(
-            (e) => PostEntity.fromPostModel(e),
-          )
-          .toList(),
+      content: data.content.map((e) => PostEntity.fromPostModel(e)).toList(),
     );
   }
 
@@ -94,6 +78,16 @@ class PostRepositoryImpl implements PostRepository {
     return _remoteDatasource.unlikePost(postId);
   }
 
+  @override
+  Future<void> bookmarkPost(int postId) {
+    return _remoteDatasource.bookmarkPost(postId);
+  }
+
+  @override
+  Future<void> unbookmarkPost(int postId) {
+    return _remoteDatasource.unbookmarkPost(postId);
+  }
+
   @override
   Future<Set<int>> getCachedLikedPostIds() {
     return _localDatasource.getLikedPostIds();
@@ -105,24 +99,19 @@ class PostRepositoryImpl implements PostRepository {
   }
 
   @override
-  Future<void> bookmarkPost(int postId) {
-    return _remoteDatasource.bookmarkPost(postId);
-  }
-
-  @override
-  Future<void> unbookmarkPost(int postId) {
-    return _remoteDatasource.unbookmarkPost(postId);
+  Future<bool> likedPost(int postId) {
+    return _localDatasource.likedPost(postId);
   }
 
   @override
   Future<ListableWrapper<PostEntity>> search(
-    String keyword,
-    List<String>? tags,
-    String? sort,
-    bool? latest,
-    int? page,
-    int? size,
-  ) async {
+      String keyword,
+      List<String>? tags,
+      String? sort,
+      bool? latest,
+      int? page,
+      int? size,
+      ) async {
     final model = PostSearchRequestModel(
       keyword: keyword,
       tags: tags,
@@ -132,22 +121,16 @@ class PostRepositoryImpl implements PostRepository {
       size: size,
     );
     final json = await _remoteDatasource.search(model);
-
     if (json == null) return ListableWrapper.none();
 
     final data = PostDataModel.fromJson(json);
-
     return ListableWrapper<PostEntity>(
       page: data.page,
       size: data.size,
       totalElements: data.totalElements,
       totalPages: data.totalPages,
       last: data.last,
-      content: data.content
-          .map(
-            (e) => PostEntity.fromPostModel(e),
-          )
-          .toList(),
+      content: data.content.map((e) => PostEntity.fromPostModel(e)).toList(),
     );
   }
-}
+}
\ No newline at end of file
diff --git a/lib/domain/entities/post/like_changed_event.dart b/lib/domain/entities/post/like_changed_event.dart
new file mode 100644
index 00000000..165691b8
--- /dev/null
+++ b/lib/domain/entities/post/like_changed_event.dart
@@ -0,0 +1,11 @@
+class LikeChangedEvent {
+  final int postId;
+  final bool isLiked;
+  final int likeCount;
+
+  LikeChangedEvent({
+    required this.postId,
+    required this.isLiked,
+    required this.likeCount,
+  });
+}
diff --git a/lib/domain/repositories/post/post_repository.dart b/lib/domain/repositories/post/post_repository.dart
index 106ecebb..45c9d176 100644
--- a/lib/domain/repositories/post/post_repository.dart
+++ b/lib/domain/repositories/post/post_repository.dart
@@ -15,10 +15,7 @@ abstract class PostRepository {
 
   Future<int> createPost(PostCreateRequestModel model);
 
-  Future<void> updatePost(
-    int postId,
-    PostUpdateRequestModel model,
-  );
+  Future<void> updatePost(int postId, PostUpdateRequestModel model);
 
   Future<void> deletePost(int postId);
 
@@ -30,20 +27,18 @@ abstract class PostRepository {
 
   Future<void> unbookmarkPost(int postId);
 
-  /// 로컬 좋아요 캐시
   Future<Set<int>> getCachedLikedPostIds();
 
-  Future<void> saveLikeState(
-    int postId,
-    bool isLiked,
-  );
+  Future<void> saveLikeState(int postId, bool isLiked);
+
+  Future<bool> likedPost(int postId);
 
   Future<ListableWrapper<PostEntity>> search(
-    String keyword,
-    List<String>? tags,
-    String? sort,
-    bool? latest,
-    int? page,
-    int? size,
-  );
-}
+      String keyword,
+      List<String>? tags,
+      String? sort,
+      bool? latest,
+      int? page,
+      int? size,
+      );
+}
\ No newline at end of file
diff --git a/lib/domain/usecases/post/liked_post_use_case.dart b/lib/domain/usecases/post/liked_post_use_case.dart
new file mode 100644
index 00000000..5c51739f
--- /dev/null
+++ b/lib/domain/usecases/post/liked_post_use_case.dart
@@ -0,0 +1,11 @@
+import 'package:ondo/domain/repositories/post/post_repository.dart';
+
+class LikedPostUseCase {
+  final PostRepository _repository;
+
+  LikedPostUseCase(this._repository);
+
+  Future<bool> call(int postId) {
+    return _repository.likedPost(postId);
+  }
+}
\ No newline at end of file
diff --git a/lib/presentation/community/controllers/community_controller.dart b/lib/presentation/community/controllers/community_controller.dart
index b9c81299..b1c64dd2 100644
--- a/lib/presentation/community/controllers/community_controller.dart
+++ b/lib/presentation/community/controllers/community_controller.dart
@@ -2,37 +2,38 @@ import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import 'package:ondo/domain/entities/post/post_entity.dart';
 import 'package:ondo/domain/usecases/post/create_post_usecase.dart';
-import 'package:ondo/domain/usecases/post/get_cached_liked_post_ids_use_case.dart';
 import 'package:ondo/domain/usecases/post/load_recommend_post_list_use_case.dart';
 import 'package:ondo/domain/usecases/post/like_post_usecase.dart';
+import 'package:ondo/domain/usecases/post/liked_post_use_case.dart';
 import 'package:ondo/domain/usecases/post/save_post_like_local_use_case.dart';
 import 'package:ondo/domain/usecases/post/unlike_post_usecase.dart';
 import 'package:ondo/domain/usecases/post/update_post_usecase.dart';
 import 'package:ondo/presentation/community/controllers/community_post_create_screen_controller.dart';
 import 'package:ondo/presentation/community/screens/community_post_create_screen.dart';
-import 'package:ondo/presentation/home/controllers/home_controller.dart';
+import 'package:ondo/presentation/post/controllers/post_controller.dart';
 
 class CommunityController extends GetxController {
   final LikePostUseCase _likeUseCase;
   final UnlikePostUseCase _unlikeUseCase;
   final LoadRecommendPostListUseCase _getRecommendPostsUseCase;
   final SavePostLikeLocalUseCase _savePostLikeLocalUseCase;
-  final GetCachedLikedPostIdsUseCase _getCachedLikedPostIdsUseCase;
+  final LikedPostUseCase _likedPostUseCase;
 
   CommunityController({
     required LikePostUseCase likeUseCase,
     required UnlikePostUseCase unlikeUseCase,
     required LoadRecommendPostListUseCase getRecommendPostsUseCase,
     required SavePostLikeLocalUseCase savePostLikeLocalUseCase,
-    required GetCachedLikedPostIdsUseCase getCachedLikedPostIdsUseCase,
-  }) : _likeUseCase = likeUseCase,
-       _unlikeUseCase = unlikeUseCase,
-       _getRecommendPostsUseCase = getRecommendPostsUseCase,
-       _savePostLikeLocalUseCase = savePostLikeLocalUseCase,
-       _getCachedLikedPostIdsUseCase = getCachedLikedPostIdsUseCase;
-
-  final Set<String> viewTagList = <String>{}.obs;
+    required LikedPostUseCase likedPostUseCase,
+  })  : _likeUseCase = likeUseCase,
+        _unlikeUseCase = unlikeUseCase,
+        _getRecommendPostsUseCase = getRecommendPostsUseCase,
+        _savePostLikeLocalUseCase = savePostLikeLocalUseCase,
+        _likedPostUseCase = likedPostUseCase;
+
+  final RxSet<String> viewTagList = <String>{}.obs;
   final RxSet<String> selectTagList = <String>{}.obs;
+
   final List<PostEntity> _cachePostList = <PostEntity>[];
   final RxList<PostEntity> viewPostList = <PostEntity>[].obs;
 
@@ -40,18 +41,31 @@ class CommunityController extends GetxController {
   final RxBool isLastPage = false.obs;
 
   int _currentPage = 0;
-  Set<int> _cachedLikedIds = {};
 
   @override
   void onInit() {
     super.onInit();
     viewTagList.addAll(_getTags());
-    _loadCacheAndFetch();
+    loadRecommendPostList();
+
+    ever(
+      Get.find<PostController>().lastLikeEvent,
+          (event) {
+        if (event == null) return;
+        _syncLike(event.postId, event.isLiked, event.likeCount);
+      },
+    );
   }
 
-  Future<void> _loadCacheAndFetch() async {
-    _cachedLikedIds = await _getCachedLikedPostIdsUseCase();
-    await loadRecommendPostList();
+  void _syncLike(int postId, bool isLiked, int likeCount) {
+    final cacheIndex = _cachePostList.indexWhere((p) => p.postId == postId);
+    if (cacheIndex != -1) {
+      _cachePostList[cacheIndex] = _cachePostList[cacheIndex].copyWith(
+        likeCount: likeCount,
+        isFavorite: isLiked,
+      );
+      viewPostList.assignAll(_cachePostList);
+    }
   }
 
   @override
@@ -69,6 +83,7 @@ class CommunityController extends GetxController {
     }
 
     if (isLastPage.value) return;
+
     isLoading.value = true;
 
     try {
@@ -77,56 +92,45 @@ class CommunityController extends GetxController {
         size: 20,
       );
 
-      // 로컬 캐시 기반으로 isFavorite 덮어쓰기 (앱 재시작 후에도 유지)
-      final applied = result.content.map((post) {
-        if (_cachedLikedIds.contains(post.postId)) {
-          return post.copyWith(isFavorite: true);
-        }
-        // API가 이미 좋아요 상태를 반환한 경우 캐시에도 반영
-        if (post.isFavorite) {
-          _cachedLikedIds.add(post.postId);
-        }
-        return post;
-      }).toList();
+      final applied = await Future.wait(
+        result.content.map((post) async {
+          return post.copyWith(
+            isFavorite: await _likedPostUseCase(post.postId),
+          );
+        }),
+      );
 
       _cachePostList.addAll(applied);
-
       viewPostList.assignAll(_cachePostList);
 
       isLastPage.value = result.last ?? true;
-
       _currentPage++;
     } catch (e) {
-      debugPrint(
-        '[CommunityController] 게시물 조회 실패 - error: $e',
-      );
+      debugPrint('[CommunityController] 게시물 조회 실패 - error: $e');
     } finally {
       isLoading.value = false;
     }
   }
 
+  @override
+  Future<void> refresh() async {
+    await loadRecommendPostList(refresh: true);
+  }
+
   Future<void> refreshPosts() => loadRecommendPostList(refresh: true);
 
   void enterPostCreate() {
-    Get.delete<CommunityPostCreateController>(
-      force: true,
-    );
-
+    Get.delete<CommunityPostCreateController>(force: true);
     Get.lazyPut(
-      () => CommunityPostCreateController(
+          () => CommunityPostCreateController(
         createUseCase: Get.find<CreatePostUseCase>(),
         updateUseCase: Get.find<UpdatePostUseCase>(),
       ),
     );
-
     Get.to(() => CommunityPostCreateScreen());
   }
 
-  Future<void> toggleLike(
-    int postId,
-    bool isLiked,
-  ) async {
-    // 옵티미스틱 업데이트: API 결과 전에 즉시 UI 반영
+  Future<void> toggleLike(int postId, bool isLiked) async {
     _updatePostLikeInList(postId, isLiked ? 1 : -1, isLiked);
 
     try {
@@ -135,54 +139,24 @@ class CommunityController extends GetxController {
       } else {
         await _unlikeUseCase(postId);
       }
-
-      // 로컬 캐시 갱신 및 영속화
-      if (isLiked) {
-        _cachedLikedIds.add(postId);
-      } else {
-        _cachedLikedIds.remove(postId);
-      }
       await _savePostLikeLocalUseCase(postId, isLiked);
-
-      // 홈 목록과 cross-sync
-      if (Get.isRegistered<HomeController>()) {
-        final post = viewPostList.firstWhereOrNull((p) => p.postId == postId);
-        if (post != null) {
-          Get.find<HomeController>().updatePostLike(
-            postId,
-            post.likeCount,
-            isLiked,
-          );
-        }
-      }
     } catch (e) {
-      debugPrint(
-        '[CommunityController] 좋아요 토글 실패 - error: $e',
-      );
-
-      // API 실패 시 롤백
+      debugPrint('[CommunityController] 좋아요 토글 실패 - error: $e');
       _updatePostLikeInList(postId, isLiked ? -1 : 1, !isLiked);
     }
   }
 
-  void _updatePostLikeInList(
-    int postId,
-    int delta,
-    bool isFavorite,
-  ) {
+  void _updatePostLikeInList(int postId, int delta, bool isFavorite) {
     final index = viewPostList.indexWhere((p) => p.postId == postId);
-
     if (index != -1) {
       viewPostList[index] = viewPostList[index].copyWith(
         likeCount: viewPostList[index].likeCount + delta,
         isFavorite: isFavorite,
       );
-
       viewPostList.refresh();
     }
 
     final cacheIndex = _cachePostList.indexWhere((p) => p.postId == postId);
-
     if (cacheIndex != -1) {
       _cachePostList[cacheIndex] = _cachePostList[cacheIndex].copyWith(
         likeCount: _cachePostList[cacheIndex].likeCount + delta,
@@ -191,78 +165,28 @@ class CommunityController extends GetxController {
     }
   }
 
-  Future<void> updatePostLike(
-    int postId,
-    int likeCount,
-    bool isFavorite,
-  ) async {
-    // 로컬 캐시 동기화 (PostViewController → CommunityController 방향)
-    if (isFavorite) {
-      _cachedLikedIds.add(postId);
-    } else {
-      _cachedLikedIds.remove(postId);
-    }
-    await _savePostLikeLocalUseCase(postId, isFavorite);
-
-    final index = viewPostList.indexWhere((p) => p.postId == postId);
-
-    if (index != -1) {
-      viewPostList[index] = viewPostList[index].copyWith(
-        likeCount: likeCount,
-        isFavorite: isFavorite,
-      );
-
-      viewPostList.refresh();
-    }
-
-    final cacheIndex = _cachePostList.indexWhere((p) => p.postId == postId);
-
-    if (cacheIndex != -1) {
-      _cachePostList[cacheIndex] = _cachePostList[cacheIndex].copyWith(
-        likeCount: likeCount,
-        isFavorite: isFavorite,
-      );
-    }
-  }
-
   void removePost(int postId) {
-    viewPostList.removeWhere(
-      (p) => p.postId == postId,
-    );
-
-    _cachePostList.removeWhere(
-      (p) => p.postId == postId,
-    );
+    viewPostList.removeWhere((p) => p.postId == postId);
+    _cachePostList.removeWhere((p) => p.postId == postId);
   }
 
   void searchPost(List<String> searchList) {
     final Set<PostEntity> result = {};
-
     result.addAllIf(
       searchList.isNotEmpty,
       _cachePostList.where(
-        (post) =>
+            (post) =>
+        searchList.any((search) => post.title.contains(search)) ||
+            searchList.any((search) => post.authorName.contains(search)) ||
             searchList.any(
-              (search) => post.title.contains(search),
-            ) ||
-            searchList.any(
-              (search) => post.authorName.contains(search),
-            ) ||
-            searchList.any(
-              (search) => post.tags.any(
-                (tag) => tag.contains(search),
-              ),
+                  (search) => post.tags.any((tag) => tag.contains(search)),
             ),
       ),
     );
-
     Get.find<CommunityResultController>().updateResult(result);
   }
 
-  void filterPostTag(
-    String tag,
-    bool isSelect,
-  ) {
+  void filterPostTag(String tag, bool isSelect) {
     isSelect ? selectTagList.add(tag) : selectTagList.remove(tag);
 
     if (selectTagList.isEmpty) {
@@ -273,18 +197,12 @@ class CommunityController extends GetxController {
     final result = _cachePostList
         .where(
           (post) =>
-              selectTagList.any(
-                (t) => post.title.contains(t),
-              ) ||
-              selectTagList.any(
-                (t) => post.authorName.contains(t),
-              ) ||
-              selectTagList.any(
-                (t) => post.tags.any(
-                  (skill) => skill.contains(t),
-                ),
-              ),
-        )
+      selectTagList.any((t) => post.title.contains(t)) ||
+          selectTagList.any((t) => post.authorName.contains(t)) ||
+          selectTagList.any(
+                (t) => post.tags.any((skill) => skill.contains(t)),
+          ),
+    )
         .toList();
 
     viewPostList.assignAll(result);
@@ -294,9 +212,7 @@ class CommunityController extends GetxController {
 class CommunityResultController extends GetxController {
   final RxList<PostEntity> viewPosts = <PostEntity>[].obs;
 
-  void updateResult(
-    Iterable<PostEntity> results,
-  ) {
+  void updateResult(Iterable<PostEntity> results) {
     viewPosts.assignAll(results);
   }
 }
@@ -307,4 +223,4 @@ List<String> _getTags() => [
   "UIUX",
   "공부잘하는법",
   "FrontEnd",
-];
+];
\ No newline at end of file
diff --git a/lib/presentation/community/widgets/community_post_list.dart b/lib/presentation/community/widgets/community_post_list.dart
index 35c2db67..7d20757d 100644
--- a/lib/presentation/community/widgets/community_post_list.dart
+++ b/lib/presentation/community/widgets/community_post_list.dart
@@ -10,13 +10,14 @@ class CommunityPostList extends GetView<CommunityController> {
   @override
   Widget build(BuildContext context) {
     return Obx(
-      () => IndicatorPostPageList(
+          () => IndicatorPostPageList(
         title: controller.selectTagList.isEmpty ? "게시물 목록" : "태그 분류 결과",
         items: List.generate(
           controller.viewPostList.length,
-          (index) {
+              (index) {
             final post = controller.viewPostList[index];
             return PostItem(
+              key: ValueKey(post.postId),
               post: post,
               isMy: true,
               heartAction: (isLiked, total) {
@@ -29,4 +30,4 @@ class CommunityPostList extends GetView<CommunityController> {
       ),
     );
   }
-}
+}
\ No newline at end of file
diff --git a/lib/presentation/home/controllers/home_controller.dart b/lib/presentation/home/controllers/home_controller.dart
index 8069fece..4e60af4f 100644
--- a/lib/presentation/home/controllers/home_controller.dart
+++ b/lib/presentation/home/controllers/home_controller.dart
@@ -5,22 +5,21 @@ import 'package:ondo/domain/entities/post/post_rank_entity.dart';
 import 'package:ondo/domain/entities/user/user_entity.dart';
 import 'package:ondo/domain/usecases/post/load_recommend_post_list_use_case.dart';
 import 'package:ondo/domain/usecases/user/load_recommend_users_use_case.dart';
-import 'package:ondo/domain/usecases/post/get_cached_liked_post_ids_use_case.dart';
+import 'package:ondo/domain/usecases/post/liked_post_use_case.dart';
 import 'package:ondo/domain/usecases/post/like_post_usecase.dart';
 import 'package:ondo/domain/usecases/post/load_recent_popular_post_list_use_case.dart';
 import 'package:ondo/domain/usecases/post/save_post_like_local_use_case.dart';
 import 'package:ondo/domain/usecases/post/post_search_use_case.dart';
 import 'package:ondo/domain/usecases/post/unlike_post_usecase.dart';
 import 'package:ondo/domain/usecases/user/user_search_use_case.dart';
-import 'package:ondo/presentation/community/controllers/community_controller.dart';
 import 'package:ondo/presentation/home/controllers/base_home_controller.dart';
+import 'package:ondo/presentation/post/controllers/post_controller.dart';
 
 class HomeController extends GetxController with BaseHomeController {
   final RxList<PostRankEntity> recentPopularPostList = <PostRankEntity>[].obs;
   final List<PostEntity> _cachePostList = [];
   final List<UserEntity> _cacheProfileList = [];
 
-  ///usecase 모음
   final LoadRecommendPostListUseCase loadRecommendPostsUseCase;
   final LoadRecommendUsersUseCase loadRecommendUsersUseCase;
   final UserSearchUseCase userSearchUseCase;
@@ -28,11 +27,9 @@ class HomeController extends GetxController with BaseHomeController {
   final LikePostUseCase likePostUseCase;
   final UnlikePostUseCase unlikePostUseCase;
   final SavePostLikeLocalUseCase savePostLikeLocalUseCase;
-  final GetCachedLikedPostIdsUseCase getCachedLikedPostIdsUseCase;
+  final LikedPostUseCase likedPostUseCase;
   final LoadRecentPopularPostListUseCase loadRecentPopularPostListUseCase;
 
-  Set<int> _cachedLikedIds = {};
-
   final searchResultController = HomeSearchResultController();
 
   HomeController({
@@ -42,7 +39,7 @@ class HomeController extends GetxController with BaseHomeController {
     required this.likePostUseCase,
     required this.unlikePostUseCase,
     required this.savePostLikeLocalUseCase,
-    required this.getCachedLikedPostIdsUseCase,
+    required this.likedPostUseCase,
     required this.postSearchUseCase,
     required this.loadRecentPopularPostListUseCase,
   });
@@ -56,15 +53,32 @@ class HomeController extends GetxController with BaseHomeController {
     _loadRecentPopularPostList();
     _loadRecommendPostList(refresh: true);
     loadRecommendUsers();
+
+    ever(
+      Get.find<PostController>().lastLikeEvent,
+          (event) {
+        if (event == null) return;
+        _syncLike(event.postId, event.isLiked, event.likeCount);
+      },
+    );
+  }
+
+  void _syncLike(int postId, bool isLiked, int likeCount) {
+    final cacheIndex = _cachePostList.indexWhere((p) => p.postId == postId);
+    if (cacheIndex != -1) {
+      _cachePostList[cacheIndex] = _cachePostList[cacheIndex].copyWith(
+        likeCount: likeCount,
+        isFavorite: isLiked,
+      );
+      viewPostList.assignAll(_cachePostList);
+    }
   }
 
   Future<void> _loadRecentPopularPostList() async {
     final result = await loadRecentPopularPostListUseCase();
     if (result.isEmpty) return;
     recentPopularPostList.assignAll(result);
-    recentPopularPostList.sort(
-      (a, b) => a.rank - b.rank,
-    );
+    recentPopularPostList.sort((a, b) => a.rank - b.rank);
   }
 
   Future<void> _loadRecommendPostList({
@@ -84,26 +98,25 @@ class HomeController extends GetxController with BaseHomeController {
     );
     isLast = result.last ?? true;
 
-    // 로컬 캐시에 저장된 좋아요 누른 게시물 id 불러오기
-    if (_cachedLikedIds.isEmpty && _cachePostList.isEmpty) {
-      _cachedLikedIds = await getCachedLikedPostIdsUseCase();
-    }
-
-    // 로컬 캐시 기반으로 isFavorite 보정 (앱 재시작 후에도 유지)
-    final applied = result.content.map((post) {
-      if (_cachedLikedIds.contains(post.postId)) {
-        return post.copyWith(isFavorite: true);
-      }
-      return post;
-    }).toList();
+    final applied = await Future.wait(
+      result.content.map((post) async {
+        return post.copyWith(
+          isFavorite: await likedPostUseCase(post.postId),
+        );
+      }),
+    );
 
     _cachePostList.addAll(applied);
     viewPostList.assignAll(_cachePostList);
   }
 
+  @override
+  Future<void> refresh() async {
+    await _loadRecommendPostList(refresh: true);
+  }
+
   Future<void> toggleLike(int postId, bool isLiked) async {
-    // 옵티미스틱 업데이트
-    _updatePostLikeInList(postId, isLiked ? 1 : -1, isLiked);
+    _updatePostLikeInList(postId, isLiked);
 
     try {
       if (isLiked) {
@@ -111,60 +124,24 @@ class HomeController extends GetxController with BaseHomeController {
       } else {
         await unlikePostUseCase(postId);
       }
-
-      if (isLiked) {
-        _cachedLikedIds.add(postId);
-      } else {
-        _cachedLikedIds.remove(postId);
-      }
       await savePostLikeLocalUseCase(postId, isLiked);
-
-      // 커뮤니티 목록과 cross-sync
-      if (Get.isRegistered<CommunityController>()) {
-        final post = viewPostList.firstWhereOrNull((p) => p.postId == postId);
-        if (post != null) {
-          Get.find<CommunityController>().updatePostLike(
-            postId,
-            post.likeCount,
-            isLiked,
-          );
-        }
-      }
     } catch (e) {
       debugPrint('[HomeController] 좋아요 토글 실패 - error: $e');
-      _updatePostLikeInList(postId, isLiked ? -1 : 1, !isLiked);
+      _updatePostLikeInList(postId, !isLiked);
     }
   }
 
-  void _updatePostLikeInList(int postId, int delta, bool isFavorite) {
+  void _updatePostLikeInList(int postId, bool isFavorite) {
     final cacheIndex = _cachePostList.indexWhere((p) => p.postId == postId);
     if (cacheIndex != -1) {
       _cachePostList[cacheIndex] = _cachePostList[cacheIndex].copyWith(
-        likeCount: _cachePostList[cacheIndex].likeCount + delta,
+        likeCount: _cachePostList[cacheIndex].likeCount + (isFavorite ? 1 : -1),
         isFavorite: isFavorite,
       );
     }
     viewPostList.assignAll(_cachePostList);
   }
 
-  void updatePostLike(int postId, int likeCount, bool isFavorite) {
-    final index = viewPostList.indexWhere((p) => p.postId == postId);
-    if (index != -1) {
-      viewPostList[index] = viewPostList[index].copyWith(
-        likeCount: likeCount,
-        isFavorite: isFavorite,
-      );
-      viewPostList.refresh();
-    }
-    final cacheIndex = _cachePostList.indexWhere((p) => p.postId == postId);
-    if (cacheIndex != -1) {
-      _cachePostList[cacheIndex] = _cachePostList[cacheIndex].copyWith(
-        likeCount: likeCount,
-        isFavorite: isFavorite,
-      );
-    }
-  }
-
   Future<void> loadRecommendUsers() async {
     _cacheProfileList.clear();
     _cacheProfileList.addAll(await loadRecommendUsersUseCase.call());
@@ -174,8 +151,6 @@ class HomeController extends GetxController with BaseHomeController {
   void search(String query) async {
     final Set<UserEntity> userRes = {};
 
-    ///서버 유저 검색 api에서 user결과 실시간 표시
-    // TODO 구조 변경
     userRes.addAll(
       await userSearchUseCase.call(keyword: query),
     );
@@ -185,7 +160,6 @@ class HomeController extends GetxController with BaseHomeController {
       sort: "latest",
     );
 
-    ///홈 검색 결과 표시 controller
     searchResultController.updateResult(
       postResult.content,
       userRes,
@@ -195,12 +169,11 @@ class HomeController extends GetxController with BaseHomeController {
 
 class HomeSearchResultController extends GetxController
     with BaseHomeController {
-  ///홈 검색 결과 업데이트
   void updateResult(
-    Iterable<PostEntity> posts,
-    Iterable<UserEntity> profiles,
-  ) {
+      Iterable<PostEntity> posts,
+      Iterable<UserEntity> profiles,
+      ) {
     viewUserList.assignAll(profiles);
     viewPostList.assignAll(posts);
   }
-}
+}
\ No newline at end of file
diff --git a/lib/presentation/home/screens/home_screen.dart b/lib/presentation/home/screens/home_screen.dart
index 6f6a53cd..2a5e9ae4 100644
--- a/lib/presentation/home/screens/home_screen.dart
+++ b/lib/presentation/home/screens/home_screen.dart
@@ -21,7 +21,9 @@ class HomeScreen extends GetView<HomeController> {
       backgroundColor: AppColors.background,
       body: MainTopSearchBar(
         pageState: SearchPageState.home,
-        mainPage: SingleChildScrollView(child: _body()),
+        mainPage: SingleChildScrollView(
+          child: _body(),
+        ),
         resultPageBuilder: (state) {
           if (state.keyword.isEmpty) return null;
           controller.search(state.keyword);
@@ -36,29 +38,34 @@ class HomeScreen extends GetView<HomeController> {
       children: [
         HomePostRankList(),
         AppGap.v16,
-        HomeProfileList(title: "커피챗 추천", controller: controller),
+
+        HomeProfileList(
+          title: "커피챗 추천",
+          controller: controller,
+        ),
+
         AppGap.v16,
+
         Obx(
-          () => PostGridList(
+              () => PostGridList(
             title: "추천 게시물",
             list: controller.viewPostList
                 .map(
                   (post) => PostItem(
-                    post: post,
-                    bookmarkAction: (isBookmark, total) {
-                      //TODO : 북마크 api 개발 이후 구현
-                    },
-                    heartAction: (isFavorite, total) {
-                      controller.toggleLike(post.postId, isFavorite);
-                    },
-                    isMy: true,
-                  ),
-                )
+                post: post,
+                isMy: true,
+                heartAction: (isFavorite, total) {
+                  controller.toggleLike(post.postId, isFavorite);
+                },
+                bookmarkAction: (isBookmark, total) {},
+              ),
+            )
                 .toList(),
           ),
         ),
+
         AppGap.v16,
       ],
     );
   }
-}
+}
\ No newline at end of file
diff --git a/lib/presentation/post/controllers/post_controller.dart b/lib/presentation/post/controllers/post_controller.dart
index 18386710..8bcb6f62 100644
--- a/lib/presentation/post/controllers/post_controller.dart
+++ b/lib/presentation/post/controllers/post_controller.dart
@@ -1,14 +1,30 @@
 import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import 'package:go_router/go_router.dart';
+import 'package:ondo/domain/entities/post/like_changed_event.dart';
 
 class PostController extends GetxController {
-  void enterPostDetail(
+  /// 상세 화면에서 변경된 좋아요 상태를 게시물 목록 화면들에 전파하기 위한 이벤트.
+  /// 게시물 목록 화면 컨트롤러(Home/Community 등)는 PostController를 통해 상세
+  /// 화면으로 진입하므로, 좋아요 동기화 이벤트도 PostController에서 관리한다.
+  final Rx<LikeChangedEvent?> lastLikeEvent = Rx<LikeChangedEvent?>(null);
+
+  void updateLikeState(int postId, bool isLiked, int likeCount) {
+    lastLikeEvent.value = LikeChangedEvent(
+      postId: postId,
+      isLiked: isLiked,
+      likeCount: likeCount,
+    );
+  }
+
+  Future<Map<String, dynamic>?> enterPostDetail(
       BuildContext context,
       bool isMy,
-      int postId, {
-        bool isFavorite = false,
-      }) {
-    context.push('/post/$postId', extra: isFavorite);
+      int postId,
+      ) async {
+    final result = await context.push<Map<String, dynamic>>(
+      '/post/$postId',
+    );
+    return result;
   }
 }
diff --git a/lib/presentation/post/controllers/post_view_controller.dart b/lib/presentation/post/controllers/post_view_controller.dart
index 954dccfc..ea6de5b1 100644
--- a/lib/presentation/post/controllers/post_view_controller.dart
+++ b/lib/presentation/post/controllers/post_view_controller.dart
@@ -10,9 +10,10 @@ import 'package:ondo/domain/usecases/comment/create_comment_usecase.dart';
 import 'package:ondo/domain/usecases/comment/delete_comment_usecase.dart';
 import 'package:ondo/domain/usecases/comment/get_comments_usecase.dart';
 import 'package:ondo/domain/usecases/post/bookmark_post_usecase.dart';
+import 'package:ondo/domain/usecases/post/liked_post_use_case.dart';
+import 'package:ondo/domain/usecases/post/save_post_like_local_use_case.dart';
 import 'package:ondo/domain/usecases/post/unbookmark_post_usecase.dart';
-import 'package:ondo/presentation/community/controllers/community_controller.dart';
-import 'package:ondo/presentation/home/controllers/home_controller.dart';
+import 'package:ondo/presentation/post/controllers/post_controller.dart';
 
 import '../../../data/models/post/request/post_update_request_model.dart';
 import '../../../domain/usecases/post/create_post_usecase.dart';
@@ -38,6 +39,8 @@ class PostViewController extends GetxController {
   final GetCommentsUseCase _getCommentsUseCase;
   final CreateCommentUseCase _createCommentUseCase;
   final DeleteCommentUseCase _deleteCommentUseCase;
+  final LikedPostUseCase _likedPostUseCase;
+  final SavePostLikeLocalUseCase _savePostLikeLocalUseCase;
 
   PostViewController({
     required this.postId,
@@ -52,16 +55,20 @@ class PostViewController extends GetxController {
     required GetCommentsUseCase getCommentsUseCase,
     required CreateCommentUseCase createCommentUseCase,
     required DeleteCommentUseCase deleteCommentUseCase,
-  }) : _getPostDetailUseCase = getPostDetailUseCase,
-       _updatePostUseCase = updatePostUseCase,
-       _deletePostUseCase = deletePostUseCase,
-       _likePostUseCase = likePostUseCase,
-       _unlikePostUseCase = unlikePostUseCase,
-       _bookmarkPostUseCase = bookmarkPostUseCase,
-       _unbookmarkPostUseCase = unbookmarkPostUseCase,
-       _getCommentsUseCase = getCommentsUseCase,
-       _createCommentUseCase = createCommentUseCase,
-       _deleteCommentUseCase = deleteCommentUseCase;
+    required LikedPostUseCase likedPostUseCase,
+    required SavePostLikeLocalUseCase savePostLikeLocalUseCase,
+  })  : _getPostDetailUseCase = getPostDetailUseCase,
+        _updatePostUseCase = updatePostUseCase,
+        _deletePostUseCase = deletePostUseCase,
+        _likePostUseCase = likePostUseCase,
+        _unlikePostUseCase = unlikePostUseCase,
+        _bookmarkPostUseCase = bookmarkPostUseCase,
+        _unbookmarkPostUseCase = unbookmarkPostUseCase,
+        _getCommentsUseCase = getCommentsUseCase,
+        _createCommentUseCase = createCommentUseCase,
+        _deleteCommentUseCase = deleteCommentUseCase,
+        _likedPostUseCase = likedPostUseCase,
+        _savePostLikeLocalUseCase = savePostLikeLocalUseCase;
 
   final Rx<PostDetailEntity?> post = Rx<PostDetailEntity?>(null);
   final RxList<PostEntity> relatedPostList = <PostEntity>[].obs;
@@ -87,112 +94,87 @@ class PostViewController extends GetxController {
 
   late final TextEditingController commentController;
 
+  bool initialHeartState = false;
+
   @override
   void onInit() {
     super.onInit();
-
     commentController = TextEditingController();
-
-    selectHeart.value = _resolveIsFavorite();
-
-    debugPrint(
-      '[PostViewController] onInit - postId: $postId, resolvedIsFavorite: ${selectHeart.value}',
-    );
-
-    fetchPostDetail(postId);
+    _initPostState();
     fetchComments();
   }
 
-  bool _resolveIsFavorite() {
-    if (Get.isRegistered<CommunityController>()) {
-      final post = Get.find<CommunityController>().viewPostList
-          .firstWhereOrNull(
-            (p) => p.postId == postId,
-          );
-
-      if (post != null) return post.isFavorite;
-    }
-
-    if (Get.isRegistered<HomeController>()) {
-      final post = Get.find<HomeController>().viewPostList.firstWhereOrNull(
-        (p) => p.postId == postId,
-      );
+  Future<void> _initPostState() async {
+    // 좋아요 여부(로컬 캐시)와 상세 정보(서버)를 함께 받은 뒤,
+    // 상세에서 조회한 최신 좋아요 수를 게시물 목록 화면들에 동기화한다.
+    await Future.wait([
+      _initIsFavorite(),
+      fetchPostDetail(postId),
+    ]);
+    _syncLikeToList();
+  }
 
-      if (post != null) return post.isFavorite;
-    }
+  Future<void> _initIsFavorite() async {
+    final liked = await _likedPostUseCase(postId);
+    selectHeart.value = liked;
+    initialHeartState = liked;
+  }
 
-    return initialIsFavorite;
+  /// 상세에서 조회한 최신 좋아요 상태/수를 목록 화면 캐시에 반영한다.
+  /// (토글하지 않고 단순 조회만 한 경우에도 미리보기 count가 상세와 일치하도록)
+  void _syncLikeToList() {
+    Get.find<PostController>().updateLikeState(
+      postId,
+      selectHeart.value,
+      heartTotal.value,
+    );
   }
 
+
   Future<void> fetchPostDetail(int postId) async {
     isLoading.value = true;
     errorMessage.value = '';
 
     try {
-      debugPrint(
-        '[PostViewController] API 요청 시작 - postId: $postId',
-      );
-
       final result = await _getPostDetailUseCase(postId);
 
       post.value = result;
-
-      debugPrint(
-        '[PostViewController] API 응답 성공 - title: ${result.title}',
-      );
-
       title.value = result.title;
       authorName.value = result.authorName;
       bodyText.value = result.content;
       postTags.assignAll(result.tags);
 
       heartTotal.value = result.likeCount;
+      bookMarkTotal.value = result.bookmarkCount;
       commentCount.value = result.commentCount;
-      selectHeart.value = result.isLike;
     } catch (e) {
-      debugPrint(
-        '[PostViewController] API 요청 실패 - error: $e',
-      );
-
+      debugPrint('[PostViewController] API 요청 실패 - error: $e');
       errorMessage.value = e.toString();
     } finally {
       isLoading.value = false;
     }
   }
 
+
   Future<void> fetchComments() async {
     isCommentsLoading.value = true;
 
     try {
-      debugPrint(
-        '[PostViewController] 댓글 조회 요청 - postId: $postId',
-      );
-
       final result = await _getCommentsUseCase(postId);
-
       comments.assignAll(
-        result.map(
-          (e) => e.toEntity(currentUserId: null),
-        ),
-      );
-
-      debugPrint(
-        '[PostViewController] 댓글 조회 성공 - count: ${result.length}',
+        result.map((e) => e.toEntity(currentUserId: null)),
       );
     } catch (e) {
-      debugPrint(
-        '[PostViewController] 댓글 조회 실패 - error: $e',
-      );
-
+      debugPrint('[PostViewController] 댓글 조회 실패 - error: $e');
       errorMessage.value = e.toString();
     } finally {
       isCommentsLoading.value = false;
     }
   }
 
+
   Future<void> toggleLike(bool isLiked) async {
     selectHeart.value = isLiked;
-
     heartTotal.value = isLiked ? heartTotal.value + 1 : heartTotal.value - 1;
 
     try {
@@ -201,29 +183,17 @@ class PostViewController extends GetxController {
       } else {
         await _unlikePostUseCase(postId);
       }
+      await _savePostLikeLocalUseCase(postId, isLiked);
 
-      if (Get.isRegistered<CommunityController>()) {
-        await Get.find<CommunityController>().updatePostLike(
-          postId,
-          heartTotal.value,
-          isLiked,
-        );
-      }
 
-      if (Get.isRegistered<HomeController>()) {
-        Get.find<HomeController>().updatePostLike(
-          postId,
-          heartTotal.value,
-          isLiked,
-        );
-      }
-    } catch (e) {
-      debugPrint(
-        '[PostViewController] 좋아요 토글 실패 - error: $e',
+      Get.find<PostController>().updateLikeState(
+        postId,
+        isLiked,
+        heartTotal.value,
       );
-
+    } catch (e) {
+      debugPrint('[PostViewController] 좋아요 토글 실패 - error: $e');
       selectHeart.value = !isLiked;
-
       heartTotal.value = isLiked ? heartTotal.value - 1 : heartTotal.value + 1;
     }
   }
@@ -240,15 +210,8 @@ class PostViewController extends GetxController {
       } else {
         await _unbookmarkPostUseCase(postId);
       }
-
-      debugPrint(
-        '[PostViewController] 북마크 토글 성공 - isBookmarked: $isBookmarked',
-      );
     } catch (e) {
-      debugPrint(
-        '[PostViewController] 북마크 토글 실패 - error: $e',
-      );
-
+      debugPrint('[PostViewController] 북마크 토글 실패 - error: $e');
       selectBookMark.value = !isBookmarked;
       bookMarkTotal.value = isBookmarked
           ? bookMarkTotal.value - 1
@@ -256,6 +219,7 @@ class PostViewController extends GetxController {
     }
   }
 
+
   Future<void> updatePost({
     required String title,
     required String content,
@@ -265,10 +229,6 @@ class PostViewController extends GetxController {
     errorMessage.value = '';
 
     try {
-      debugPrint(
-        '[PostViewController] 게시물 수정 요청 - postId: $postId',
-      );
-
       await _updatePostUseCase(
         postId,
         PostUpdateRequestModel(
@@ -277,48 +237,32 @@ class PostViewController extends GetxController {
           tags: tags,
         ),
       );
-
-      debugPrint('[PostViewController] 게시물 수정 성공');
-
       await fetchPostDetail(postId);
     } catch (e) {
-      debugPrint(
-        '[PostViewController] 게시물 수정 실패 - error: $e',
-      );
-
+      debugPrint('[PostViewController] 게시물 수정 실패 - error: $e');
       errorMessage.value = e.toString();
     } finally {
       isLoading.value = false;
     }
   }
 
+
   void deletePost() {
     Get.dialog(
       CustomAlertDialog(
         title: "알림",
         comment: "정말 게시물 삭제하시겠어요?",
-        actionLeft: () {
-          Get.back();
-        },
+        actionLeft: () => Get.back(),
         actionRight: () async {
           isLoading.value = true;
-          errorMessage.value = '';
 
           try {
-            debugPrint(
-              '[PostViewController] 게시물 삭제 요청 - postId: $postId',
-            );
-
             await _deletePostUseCase(postId);
 
-            debugPrint('[PostViewController] 게시물 삭제 성공');
-            Get.find<CommunityController>().removePost(postId);
-            Get.back(closeOverlays: true);
+            Get.back();
+            Get.back(result: {'postId': postId, 'deleted': true});
           } catch (e) {
-            debugPrint(
-              '[PostViewController] 게시물 삭제 실패 - error: $e',
-            );
-
+            debugPrint('[PostViewController] 게시물 삭제 실패 - error: $e');
             errorMessage.value = e.toString();
           } finally {
             isLoading.value = false;
@@ -329,53 +273,31 @@ class PostViewController extends GetxController {
     );
   }
 
+
   Future<void> createComment(String content) async {
     if (content.trim().isEmpty) return;
 
     try {
-      debugPrint(
-        '[PostViewController] 댓글 작성 요청 - content: $content',
-      );
-
-      await _createCommentUseCase(
-        postId: postId,
-        content: content,
-      );
-
+      await _createCommentUseCase(postId: postId, content: content);
       commentController.clear();
-
       await fetchComments();
-
       commentCount.value = comments.length;
-
-      debugPrint('[PostViewController] 댓글 작성 성공');
     } catch (e) {
-      debugPrint(
-        '[PostViewController] 댓글 작성 실패 - error: $e',
-      );
+      debugPrint('[PostViewController] 댓글 작성 실패 - error: $e');
     }
   }
 
   Future<void> deleteComment(CommentEntity comment) async {
     try {
-      debugPrint(
-        '[PostViewController] 댓글 삭제 요청 - commentId: ${comment.id}',
-      );
-
       await _deleteCommentUseCase(comment.id);
-
-      comments.removeWhere((c) => c.id == comment.id);
-
+      await fetchComments();
       commentCount.value = comments.length;
-
-      debugPrint('[PostViewController] 댓글 삭제 성공');
     } catch (e) {
-      debugPrint(
-        '[PostViewController] 댓글 삭제 실패 - error: $e',
-      );
+      debugPrint('[PostViewController] 댓글 삭제 실패 - error: $e');
     }
   }
 
+
   void reportPost(BuildContext context) {
     showDialog(
       context: context,
@@ -396,10 +318,11 @@ class PostViewController extends GetxController {
     );
   }
 
+
   void editPost() {
     Get.delete<CommunityPostCreateController>(force: true);
     Get.lazyPut(
-      () => CommunityPostCreateController(
+          () => CommunityPostCreateController(
         createUseCase: Get.find<CreatePostUseCase>(),
         updateUseCase: Get.find<UpdatePostUseCase>(),
         isEditMode: true,
@@ -411,4 +334,21 @@ class PostViewController extends GetxController {
     );
     Get.to(() => CommunityPostCreateScreen());
   }
-}
+
+
+  void goBack() {
+    Get.back(result: {
+      'postId': postId,
+      'isLiked': selectHeart.value,
+      'likeCount': heartTotal.value,
+      'changed': selectHeart.value != initialHeartState,
+      'deleted': false,
+    });
+  }
+
+  @override
+  void onClose() {
+    commentController.dispose();
+    super.onClose();
+  }
+}
\ No newline at end of file
diff --git a/lib/presentation/post/screens/post_detail_screen.dart b/lib/presentation/post/screens/post_detail_screen.dart
index 138d022a..076e659f 100644
--- a/lib/presentation/post/screens/post_detail_screen.dart
+++ b/lib/presentation/post/screens/post_detail_screen.dart
@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:get/get.dart';
+import 'package:go_router/go_router.dart';
 import 'package:ondo/core/design_system/app_layout.dart';
 import 'package:ondo/core/design_system/components/custom_back_button.dart';
 import 'package:ondo/core/ui/base/base_scaffold.dart';
@@ -25,17 +26,35 @@ class _PostDetailScreenState extends State<PostDetailScreen> {
     controller = Get.find<PostViewController>();
   }
 
+  void _onBack() {
+    final map = {
+      'postId': controller.postId,
+      'isLiked': controller.selectHeart.value,
+      'likeCount': controller.heartTotal.value,
+      'changed': controller.selectHeart.value != controller.initialHeartState,
+      'deleted': false,
+    };
+    debugPrint(' _onBack: $map');
+    context.pop(map);
+  }
+
   @override
   Widget build(BuildContext context) {
-    return BaseScaffold(
-      body: SingleChildScrollView(
-        child: Column(
-          children: [
-            ..._top(),
-            AppGap.v16,
-            _body(),
-            RelatedPostList(),
-          ],
+    return PopScope(
+      canPop: false,
+      onPopInvokedWithResult: (didPop, result) {
+        if (!didPop) _onBack();
+      },
+      child: BaseScaffold(
+        body: SingleChildScrollView(
+          child: Column(
+            children: [
+              ..._top(),
+              AppGap.v16,
+              _body(),
+              RelatedPostList(),
+            ],
+          ),
         ),
       ),
     );
@@ -44,6 +63,7 @@ class _PostDetailScreenState extends State<PostDetailScreen> {
   List<Widget> _top() => [
     //TODO : controller에서 publicId를 받아오면, 분기 처리
     CustomBackButton(
+      backAction: _onBack,
       moreOptions: true,
       itemBuilder: (context) => [
         _topPopupItem("게시물 수정하기", controller.editPost),
@@ -71,4 +91,4 @@ class _PostDetailScreenState extends State<PostDetailScreen> {
         onTap: onTap,
         child: Center(child: Text(title)),
       );
-}
+}
\ No newline at end of file
diff --git a/lib/presentation/post/widgets/post_body.dart b/lib/presentation/post/widgets/post_body.dart
index 5cf66e4c..9a28321c 100644
--- a/lib/presentation/post/widgets/post_body.dart
+++ b/lib/presentation/post/widgets/post_body.dart
@@ -14,7 +14,7 @@ class PostBody extends GetView<PostViewController> {
   @override
   Widget build(BuildContext context) {
     return Obx(
-      () => Column(
+          () => Column(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
           _top(),
@@ -77,12 +77,7 @@ class PostBody extends GetView<PostViewController> {
   );
 
   Widget _bookmarkButton() => GestureDetector(
-    onTap: () {
-      controller.selectBookMark.value = !controller.selectBookMark.value;
-      controller.selectBookMark.value
-          ? controller.bookMarkTotal.value += 1
-          : controller.bookMarkTotal.value -= 1;
-    },
+    onTap: () => controller.toggleBookmark(!controller.selectBookMark.value), // 수정
     child: Row(
       mainAxisSize: MainAxisSize.min,
       children: [
@@ -102,4 +97,4 @@ class PostBody extends GetView<PostViewController> {
       ],
     ),
   );
-}
+}
\ No newline at end of file
diff --git a/lib/presentation/post/widgets/post_item.dart b/lib/presentation/post/widgets/post_item.dart
index 3925c986..c206fbc3 100644
--- a/lib/presentation/post/widgets/post_item.dart
+++ b/lib/presentation/post/widgets/post_item.dart
@@ -26,12 +26,11 @@ class PostItem extends GetView<PostController> {
   @override
   Widget build(BuildContext context) {
     return GestureDetector(
-      onTap: () {
-        controller.enterPostDetail(
+      onTap: () async {
+        await controller.enterPostDetail(
           context,
           isMy,
           post.postId,
-          isFavorite: post.isFavorite,
         );
       },
       child: Container(
@@ -125,4 +124,4 @@ class PostItem extends GetView<PostController> {
       ],
     );
   }
-}
+}
\ No newline at end of file