diff --git a/src/main/java/leets/weeth/domain/board/application/usecase/PostUseCaseImpl.java b/src/main/java/leets/weeth/domain/board/application/usecase/PostUseCaseImpl.java
index 4ba68201..1ad0e60e 100644
--- a/src/main/java/leets/weeth/domain/board/application/usecase/PostUseCaseImpl.java
+++ b/src/main/java/leets/weeth/domain/board/application/usecase/PostUseCaseImpl.java
@@ -131,7 +131,7 @@ public Slice<PostDTO.ResponseEducationAll> findEducationPosts(Long userId, Part
 
         if (user.hasRole(Role.ADMIN)) {
 
-            return postFindService.findByCategory(part, Category.Education, pageNumber, pageSize)
+            return postFindService.findByCategory(part, Category.Education, cardinalNumber, pageNumber, pageSize)
                     .map(post -> mapper.toEducationAll(post, checkFileExistsByPost(post.getId())));
         }
 
diff --git a/src/main/java/leets/weeth/domain/board/domain/repository/PostRepository.java b/src/main/java/leets/weeth/domain/board/domain/repository/PostRepository.java
index 3070876d..00adb651 100644
--- a/src/main/java/leets/weeth/domain/board/domain/repository/PostRepository.java
+++ b/src/main/java/leets/weeth/domain/board/domain/repository/PostRepository.java
@@ -82,14 +82,15 @@ OR LOWER(p.content) LIKE LOWER(CONCAT('%', :kw, '%'))
 		SELECT p
 		  FROM Post p
 		 WHERE p.category = :category
+		   AND (:cardinal IS NULL OR p.cardinalNumber = :cardinal)
 		   AND (
 				 :partName = 'ALL'
 			  OR FUNCTION('FIND_IN_SET', :partName, p.parts) > 0
 			  OR FUNCTION('FIND_IN_SET', 'ALL',    p.parts) > 0
-			 )
+			   )
 	  ORDER BY p.id DESC
 	""")
-	Slice<Post> findByCategoryWithPart(@Param("partName") String partName, @Param("category") Category category, Pageable pageable);
+	Slice<Post> findByCategoryAndOptionalCardinalWithPart(@Param("partName") String partName, @Param("category") Category category, @Param("cardinal") Integer cardinal, Pageable pageable);
 
 	@Query("""
 		SELECT p
diff --git a/src/main/java/leets/weeth/domain/board/domain/service/PostFindService.java b/src/main/java/leets/weeth/domain/board/domain/service/PostFindService.java
index 4576d04e..c010253d 100644
--- a/src/main/java/leets/weeth/domain/board/domain/service/PostFindService.java
+++ b/src/main/java/leets/weeth/domain/board/domain/service/PostFindService.java
@@ -79,10 +79,10 @@ public Slice<Post> findEducationByCardinal(Part part, int cardinalNumber, Pageab
         return postRepository.findByCategoryAndCardinalNumberWithPart(partName, Category.Education, cardinalNumber, pageable);
     }
 
-    public Slice<Post> findByCategory(Part part, Category category, int pageNumber, int pageSize) {
+    public Slice<Post> findByCategory(Part part, Category category, Integer cardinal, int pageNumber, int pageSize) {
         Pageable pageable = PageRequest.of(pageNumber, pageSize, Sort.by(Sort.Direction.DESC, "id"));
         String partName = (part != null ? part.name() : Part.ALL.name());
 
-        return postRepository.findByCategoryWithPart(partName, category, pageable);
+        return postRepository.findByCategoryAndOptionalCardinalWithPart(partName, category, cardinal, pageable);
     }
 }