diff --git a/src/main/java/org/harang/server/controller/PostController.java b/src/main/java/org/harang/server/controller/PostController.java
index ff2a8e0..0c021d2 100644
--- a/src/main/java/org/harang/server/controller/PostController.java
+++ b/src/main/java/org/harang/server/controller/PostController.java
@@ -11,6 +11,7 @@
 import org.harang.server.dto.type.SuccessMessage;
 import org.harang.server.service.PostService;
 import org.springframework.web.bind.annotation.*;
+
 import java.util.List;
 
 @Slf4j
@@ -29,11 +30,6 @@ public ApiResponse<?> createPost(@MemberId Long memberId, @Valid @RequestBody Po
         return ApiResponse.success(SuccessMessage.CREATED);
     }
 
-    @DeleteMapping("/{postId}")
-    public ApiResponse<?> deletePost(@MemberId Long memberId, @PathVariable Long postId) {
-        postService.deletePost(memberId, postId);
-        return ApiResponse.success(SuccessMessage.OK);
-
     @GetMapping
     public ApiResponse<List<PostResponse>> getAllPosts() {
         return ApiResponse.success(postService.getAllPosts());
diff --git a/src/main/java/org/harang/server/domain/Category.java b/src/main/java/org/harang/server/domain/Category.java
index 36d6854..f3f79d3 100644
--- a/src/main/java/org/harang/server/domain/Category.java
+++ b/src/main/java/org/harang/server/domain/Category.java
@@ -21,7 +21,7 @@ public class Category {
     @Column(name = "name", nullable = false)
     private String name;
 
-    @OneToMany(mappedBy = "category", cascade = CascadeType.ALL)
+    @OneToMany(mappedBy = "category")
     private List<PostCategory> postCategoryList = new ArrayList<>();
 
     @Builder
diff --git a/src/main/java/org/harang/server/domain/Help.java b/src/main/java/org/harang/server/domain/Help.java
index 9a0f2e1..07dd418 100644
--- a/src/main/java/org/harang/server/domain/Help.java
+++ b/src/main/java/org/harang/server/domain/Help.java
@@ -22,7 +22,7 @@ public class Help {
     private String name;
 
     /* Relation Parent Mapping */
-    @OneToMany(mappedBy = "help", cascade = CascadeType.ALL)
+    @OneToMany(mappedBy = "help")
     private List<MemberHelp> memberHelpList = new ArrayList<>();
 
     @Builder
diff --git a/src/main/java/org/harang/server/domain/Location.java b/src/main/java/org/harang/server/domain/Location.java
index f54751c..ad08ce8 100644
--- a/src/main/java/org/harang/server/domain/Location.java
+++ b/src/main/java/org/harang/server/domain/Location.java
@@ -15,7 +15,7 @@ public class Location {
     @Column(name = "id", nullable = false)
     private Long id;
 
-    @OneToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
+    @OneToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "post_id")
     private Post post;
 
diff --git a/src/main/java/org/harang/server/domain/MemberInfo.java b/src/main/java/org/harang/server/domain/MemberInfo.java
index 94509e3..4dc4339 100644
--- a/src/main/java/org/harang/server/domain/MemberInfo.java
+++ b/src/main/java/org/harang/server/domain/MemberInfo.java
@@ -32,10 +32,10 @@ public class MemberInfo {
     private String refreshToken;
 
     /* Relation Parent Mapping */
-    @OneToMany(mappedBy = "memberInfo", cascade = CascadeType.ALL)
+    @OneToMany(mappedBy = "memberInfo")
     private List<MemberHelp> memberHelpList = new ArrayList<>();
 
-    @OneToMany(mappedBy = "memberInfo", cascade = CascadeType.ALL)
+    @OneToMany(mappedBy = "memberInfo")
     private List<Certification> certificationList = new ArrayList<>();
 
     @Builder
diff --git a/src/main/java/org/harang/server/domain/Post.java b/src/main/java/org/harang/server/domain/Post.java
index bac69a9..381f609 100644
--- a/src/main/java/org/harang/server/domain/Post.java
+++ b/src/main/java/org/harang/server/domain/Post.java
@@ -55,10 +55,10 @@ public class Post {
     private Status status = Status.WAITING;
 
     /* Relation Parent Mapping */
-    @OneToMany(mappedBy = "post", cascade = CascadeType.ALL)
+    @OneToMany(mappedBy = "post")
     private List<Matching> matchingList = new ArrayList<>();
 
-    @OneToMany(mappedBy = "post", cascade = CascadeType.ALL)
+    @OneToMany(mappedBy = "post")
     private List<PostCategory> postCategoryList = new ArrayList<>();
 
     @OneToMany(mappedBy = "post")
diff --git a/src/main/java/org/harang/server/repository/LocationRepository.java b/src/main/java/org/harang/server/repository/LocationRepository.java
index 0e8dd3e..05ce167 100644
--- a/src/main/java/org/harang/server/repository/LocationRepository.java
+++ b/src/main/java/org/harang/server/repository/LocationRepository.java
@@ -1,16 +1,7 @@
 package org.harang.server.repository;
 
-import jakarta.transaction.Transactional;
 import org.harang.server.domain.Location;
 import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Modifying;
-import org.springframework.data.jpa.repository.Query;
 
 public interface LocationRepository extends JpaRepository<Location, Long> {
-    Location findByPostId(Long PostId);
-
-    @Transactional
-    @Modifying
-    @Query("DELETE FROM Location l WHERE l.post.id = :postId")
-    void deleteByPostId(Long postId);
 }
diff --git a/src/main/java/org/harang/server/service/PostService.java b/src/main/java/org/harang/server/service/PostService.java
index a435847..46e0900 100644
--- a/src/main/java/org/harang/server/service/PostService.java
+++ b/src/main/java/org/harang/server/service/PostService.java
@@ -70,13 +70,6 @@ public Post createPost(Long memberId, PostRequest request) {
         return savedPost;
     }
 
-    @Transactional
-    public void deletePost(Long memberId, Long postId) {
-        Post post = postRepository.findByIdOrThrow(postId);
-
-        locationRepository.deleteByPostId(postId);
-        postRepository.delete(post);
-
     public List<PostResponse> getAllPosts() {
         return postRepository.findAll()
                 .stream()