diff --git a/src/main/java/com/codeit/todo/domain/Complete.java b/src/main/java/com/codeit/todo/domain/Complete.java
index b73e683..52b8018 100644
--- a/src/main/java/com/codeit/todo/domain/Complete.java
+++ b/src/main/java/com/codeit/todo/domain/Complete.java
@@ -5,9 +5,12 @@
 import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
+import org.springframework.data.relational.core.sql.Like;
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Objects;
 
 @Entity
@@ -36,6 +39,12 @@ public class Complete {
     @JoinColumn(name = "todo_id", nullable = false)
     private Todo todo;
 
+    @OneToMany(mappedBy = "complete", cascade = CascadeType.REMOVE, orphanRemoval = true)
+    private List<Comment> comments = new ArrayList<>();
+
+    @OneToMany(mappedBy = "complete", cascade = CascadeType.REMOVE, orphanRemoval = true)
+    private List<Likes> likes = new ArrayList<>();
+
     @Builder
     public Complete(LocalDate startDate, LocalDateTime createdAt, String note, String completeLink, String completeFile, String completePic, String completeStatus, Todo todo) {
         this.startDate = startDate;
diff --git a/src/main/java/com/codeit/todo/repository/LikesRepository.java b/src/main/java/com/codeit/todo/repository/LikesRepository.java
new file mode 100644
index 0000000..06c988c
--- /dev/null
+++ b/src/main/java/com/codeit/todo/repository/LikesRepository.java
@@ -0,0 +1,8 @@
+package com.codeit.todo.repository;
+
+import com.codeit.todo.domain.Likes;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface LikesRepository extends JpaRepository<Likes, Integer> {
+    Boolean existsByUser_UserIdAndComplete_CompleteId(int userId, int completeId);
+}
diff --git a/src/main/java/com/codeit/todo/service/complete/CompleteService.java b/src/main/java/com/codeit/todo/service/complete/CompleteService.java
index 32874ec..6482ada 100644
--- a/src/main/java/com/codeit/todo/service/complete/CompleteService.java
+++ b/src/main/java/com/codeit/todo/service/complete/CompleteService.java
@@ -1,8 +1,11 @@
 package com.codeit.todo.service.complete;
 
 import com.codeit.todo.web.dto.request.complete.UpdateCompleteRequest;
+import com.codeit.todo.web.dto.response.complete.ReadCompleteDetailResponse;
 import com.codeit.todo.web.dto.response.complete.UpdateCompleteResponse;
 
 public interface CompleteService {
     UpdateCompleteResponse updateCompleteInfo(int userId, int completeId, UpdateCompleteRequest request);
+
+    ReadCompleteDetailResponse readComplete(int userId, int completeId);
 }
diff --git a/src/main/java/com/codeit/todo/service/complete/impl/CompleteServiceImpl.java b/src/main/java/com/codeit/todo/service/complete/impl/CompleteServiceImpl.java
index 069a065..570d564 100644
--- a/src/main/java/com/codeit/todo/service/complete/impl/CompleteServiceImpl.java
+++ b/src/main/java/com/codeit/todo/service/complete/impl/CompleteServiceImpl.java
@@ -1,17 +1,20 @@
 package com.codeit.todo.service.complete.impl;
 
 import com.codeit.todo.common.exception.complete.CompleteNotFoundException;
-import com.codeit.todo.common.exception.payload.ErrorStatus;
 import com.codeit.todo.domain.Complete;
 import com.codeit.todo.repository.CompleteRepository;
+import com.codeit.todo.repository.LikesRepository;
 import com.codeit.todo.service.complete.CompleteService;
 import com.codeit.todo.service.storage.StorageService;
 import com.codeit.todo.web.dto.request.complete.UpdateCompleteRequest;
+import com.codeit.todo.web.dto.response.comment.ReadCommentResponse;
+import com.codeit.todo.web.dto.response.complete.ReadCompleteDetailResponse;
 import com.codeit.todo.web.dto.response.complete.UpdateCompleteResponse;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.List;
 import java.util.Objects;
 
 @Service
@@ -22,12 +25,11 @@ public class CompleteServiceImpl implements CompleteService {
     private final StorageService storageService;
 
     private final CompleteRepository completeRepository;
+    private final LikesRepository likesRepository;
 
     @Override
     public UpdateCompleteResponse updateCompleteInfo(int userId, int completeId, UpdateCompleteRequest request) {
-        Complete complete = completeRepository.findById(completeId)
-                .filter(c -> c.getTodo().getGoal().getUser().getUserId() == userId)
-                .orElseThrow(() -> new CompleteNotFoundException(String.valueOf(completeId)));
+        Complete complete = getComplete(userId, completeId);
 
         String completePicUrl = "";
 
@@ -39,4 +41,23 @@ public UpdateCompleteResponse updateCompleteInfo(int userId, int completeId, Upd
 
         return new UpdateCompleteResponse(completeId);
     }
+
+    @Transactional(readOnly = true)
+    @Override
+    public ReadCompleteDetailResponse readComplete(int userId, int completeId) {
+        Complete complete = getComplete(userId, completeId);
+        List<ReadCommentResponse> commentResponses = complete.getComments().stream()
+                .map(ReadCommentResponse::fromEntity)
+                .toList();
+
+        Boolean likeStatus = likesRepository.existsByUser_UserIdAndComplete_CompleteId(userId, completeId);
+
+        return ReadCompleteDetailResponse.from(complete, commentResponses, likeStatus);
+    }
+
+    private Complete getComplete(int userId, int completeId) {
+        return completeRepository.findById(completeId)
+                .filter(c -> c.getTodo().getGoal().getUser().getUserId() == userId)
+                .orElseThrow(() -> new CompleteNotFoundException(String.valueOf(completeId)));
+    }
 }
diff --git a/src/main/java/com/codeit/todo/web/controller/CompleteController.java b/src/main/java/com/codeit/todo/web/controller/CompleteController.java
index 6b752b1..5b71b94 100644
--- a/src/main/java/com/codeit/todo/web/controller/CompleteController.java
+++ b/src/main/java/com/codeit/todo/web/controller/CompleteController.java
@@ -4,6 +4,8 @@
 import com.codeit.todo.service.complete.CompleteService;
 import com.codeit.todo.web.dto.request.complete.UpdateCompleteRequest;
 import com.codeit.todo.web.dto.response.Response;
+import com.codeit.todo.web.dto.response.complete.ReadCompleteDetailResponse;
+import com.codeit.todo.web.dto.response.complete.ReadCompleteResponse;
 import com.codeit.todo.web.dto.response.complete.UpdateCompleteResponse;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
@@ -35,4 +37,20 @@ public Response<UpdateCompleteResponse> updateComplete(
         int userId = userDetails.getUserId();
         return Response.ok(completeService.updateCompleteInfo(userId, completeId, request));
     }
+
+    @Operation(
+            summary = "인증 및 노트 상세 조회",
+            description = "인증 및 노트 상세조회하는  API 입니다."
+    )
+    @ApiResponses(value = {
+            @ApiResponse(responseCode = "200", description = "조회 성공")
+    })
+    @GetMapping("{completeId}")
+    public Response<ReadCompleteDetailResponse> readComplete(
+            @AuthenticationPrincipal CustomUserDetails userDetails,
+            @PathVariable int completeId
+    ) {
+        int userId = userDetails.getUserId();
+        return Response.ok(completeService.readComplete(userId, completeId));
+    }
 }
diff --git a/src/main/java/com/codeit/todo/web/dto/response/comment/ReadCommentResponse.java b/src/main/java/com/codeit/todo/web/dto/response/comment/ReadCommentResponse.java
new file mode 100644
index 0000000..7627db2
--- /dev/null
+++ b/src/main/java/com/codeit/todo/web/dto/response/comment/ReadCommentResponse.java
@@ -0,0 +1,25 @@
+package com.codeit.todo.web.dto.response.comment;
+
+import com.codeit.todo.domain.Comment;
+import lombok.Builder;
+
+import java.time.LocalDateTime;
+
+@Builder
+public record ReadCommentResponse(
+        int commentId,
+        String content,
+        String userName,
+        String profileImage,
+        LocalDateTime createdAt
+) {
+    public static ReadCommentResponse fromEntity(Comment comment) {
+        return ReadCommentResponse.builder()
+                .commentId(comment.getCommentId())
+                .content(comment.getContent())
+                .userName(comment.getUser().getName())
+                .profileImage(comment.getUser().getProfilePic())
+                .createdAt(comment.getCreatedAt())
+                .build();
+    }
+}
diff --git a/src/main/java/com/codeit/todo/web/dto/response/complete/ReadCompleteDetailResponse.java b/src/main/java/com/codeit/todo/web/dto/response/complete/ReadCompleteDetailResponse.java
new file mode 100644
index 0000000..985e432
--- /dev/null
+++ b/src/main/java/com/codeit/todo/web/dto/response/complete/ReadCompleteDetailResponse.java
@@ -0,0 +1,40 @@
+package com.codeit.todo.web.dto.response.complete;
+
+import com.codeit.todo.domain.Complete;
+import com.codeit.todo.web.dto.response.comment.ReadCommentResponse;
+import lombok.Builder;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Builder
+public record ReadCompleteDetailResponse(
+        int completeId,
+        String completePic,
+        String note,
+        String completeLink,
+        String completeStatus,
+        LocalDateTime createdAt,
+        LocalDate startDate,
+        Boolean likeStatus,
+        int likeCount,
+        int commentCount,
+        List<ReadCommentResponse> comments
+) {
+    public static ReadCompleteDetailResponse from(Complete complete, List<ReadCommentResponse> commentResponses, Boolean likeStatus) {
+        return ReadCompleteDetailResponse.builder()
+                .completeId(complete.getCompleteId())
+                .completePic(complete.getCompletePic())
+                .note(complete.getNote())
+                .completeLink(complete.getCompleteLink())
+                .completeStatus(complete.getCompleteStatus())
+                .createdAt(complete.getCreatedAt())
+                .startDate(complete.getStartDate())
+                .likeCount(complete.getLikes().size())
+                .likeStatus(likeStatus)
+                .commentCount(commentResponses.size())
+                .comments(commentResponses)
+                .build();
+    }
+}
diff --git a/src/main/java/com/codeit/todo/web/dto/response/complete/ReadCompleteResponse.java b/src/main/java/com/codeit/todo/web/dto/response/complete/ReadCompleteResponse.java
index e03a54c..d4364da 100644
--- a/src/main/java/com/codeit/todo/web/dto/response/complete/ReadCompleteResponse.java
+++ b/src/main/java/com/codeit/todo/web/dto/response/complete/ReadCompleteResponse.java
@@ -1,5 +1,6 @@
 package com.codeit.todo.web.dto.response.complete;
 
+import com.codeit.todo.domain.Comment;
 import com.codeit.todo.domain.Complete;
 import lombok.Builder;