diff --git a/src/main/java/com/beotkkot/qtudy/repository/quiz/QuizRepository.java b/src/main/java/com/beotkkot/qtudy/repository/quiz/QuizRepository.java
index 5cf133f..7142e67 100644
--- a/src/main/java/com/beotkkot/qtudy/repository/quiz/QuizRepository.java
+++ b/src/main/java/com/beotkkot/qtudy/repository/quiz/QuizRepository.java
@@ -5,6 +5,7 @@
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.List;
 
@@ -17,4 +18,6 @@ public interface QuizRepository extends JpaRepository<Quiz, Long> {
     @Query("SELECT q FROM Quiz q WHERE q.tags LIKE %:tagName% ORDER BY q.quizId ASC, RAND() LIMIT 10")
     List<Quiz> findByTagName(@Param("tagName") String tagName);
 
+    @Transactional
+    void deleteByPostId(Long postId);
 }
diff --git a/src/main/java/com/beotkkot/qtudy/repository/quiz/ReviewRepository.java b/src/main/java/com/beotkkot/qtudy/repository/quiz/ReviewRepository.java
index 5901e8c..0595f6f 100644
--- a/src/main/java/com/beotkkot/qtudy/repository/quiz/ReviewRepository.java
+++ b/src/main/java/com/beotkkot/qtudy/repository/quiz/ReviewRepository.java
@@ -7,6 +7,7 @@
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.List;
 
@@ -29,4 +30,7 @@ public interface ReviewRepository extends JpaRepository<Review, Long> {
     @Query("SELECT r FROM Review r " +
             "WHERE r.reviewId = :reviewId")
     List<Review> findReviewByReviewId(@Param("reviewId") String reviewId);
+
+    @Transactional
+    void deleteByPostId(Long postId);
 }
diff --git a/src/main/java/com/beotkkot/qtudy/service/posts/PostsService.java b/src/main/java/com/beotkkot/qtudy/service/posts/PostsService.java
index 26bcda4..9d21497 100644
--- a/src/main/java/com/beotkkot/qtudy/service/posts/PostsService.java
+++ b/src/main/java/com/beotkkot/qtudy/service/posts/PostsService.java
@@ -10,6 +10,8 @@
 import com.beotkkot.qtudy.dto.response.posts.*;
 import com.beotkkot.qtudy.repository.comments.CommentsRepository;
 import com.beotkkot.qtudy.repository.posts.PostsRepository;
+import com.beotkkot.qtudy.repository.quiz.QuizRepository;
+import com.beotkkot.qtudy.repository.quiz.ReviewRepository;
 import com.beotkkot.qtudy.repository.scrap.ScrapRepository;
 import com.beotkkot.qtudy.repository.tags.TagsRepository;
 import com.beotkkot.qtudy.repository.user.UserRepository;
@@ -36,6 +38,9 @@ public class PostsService {
     private final ScrapRepository scrapRepo;
     private final SummaryService summaryService;
     private final CommentsRepository commentsRepo;
+    private final ReviewRepository reviewRepo;
+    private final QuizRepository quizRepo;
+
 
     @Transactional
     public ResponseEntity<? super PostsResponseDto> savePost(Long kakao_uid, PostsRequestDto dto) {
@@ -230,6 +235,8 @@ public ResponseEntity<? super PostsResponseDto> deletePost(Long postId, Long kak
 
             scrapRepo.deleteByPostId(postId);
             commentsRepo.deleteByPostId(postId);
+            reviewRepo.deleteByPostId(postId);
+            quizRepo.deleteByPostId(postId);
 
             // 관련된 hash tag -1
             List<String> tagNameList = Arrays.asList(post.getTag().split("\\s*,\\s*"));