diff --git a/server/src/main/java/com/project/Glog/controller/PostController.java b/server/src/main/java/com/project/Glog/controller/PostController.java
index 10fc522..f8daf09 100644
--- a/server/src/main/java/com/project/Glog/controller/PostController.java
+++ b/server/src/main/java/com/project/Glog/controller/PostController.java
@@ -154,6 +154,16 @@ public ResponseEntity<PostPreviewDtos> searchPost(@RequestParam(defaultValue = "
         return new ResponseEntity<>(postPreviewDtos, HttpStatus.OK);
     }
 
+    @GetMapping("/search/category")
+    public ResponseEntity<PostPreviewDtos> searchContentsByCategory(@RequestParam Long categoryId) {
+        //content 내용을 포함한 게시글의 리스트를 생성한다.
+        PostPreviewDtos postPreviewDtos = postService.searchPostsByCategory(categoryId);
+
+        return new ResponseEntity<>(postPreviewDtos, HttpStatus.OK);
+    }
+
+
+
     @PatchMapping("/post/like")
     public ResponseEntity<String> plusLike(@CurrentUser UserPrincipal userPrincipal,
                                            @RequestParam Long postId) {
diff --git a/server/src/main/java/com/project/Glog/repository/PostRepository.java b/server/src/main/java/com/project/Glog/repository/PostRepository.java
index b35ace7..479d28d 100644
--- a/server/src/main/java/com/project/Glog/repository/PostRepository.java
+++ b/server/src/main/java/com/project/Glog/repository/PostRepository.java
@@ -1,5 +1,6 @@
 package com.project.Glog.repository;
 
+import com.project.Glog.domain.Category;
 import com.project.Glog.domain.Post;
 import com.project.Glog.domain.User;
 import org.springframework.data.domain.Page;
@@ -34,6 +35,7 @@ public interface PostRepository extends JpaRepository<Post,Long> {
 
     List<Post> findAllByTitleContaining(String title);
     List<Post> findAllByUser(User user);
+    List<Post> findAllByCategory(Category category);
     List<Post> findAllByContentContaining(String contnt);
 
 
diff --git a/server/src/main/java/com/project/Glog/repository/PrPostRepository.java b/server/src/main/java/com/project/Glog/repository/PrPostRepository.java
index e41184a..5adb22f 100644
--- a/server/src/main/java/com/project/Glog/repository/PrPostRepository.java
+++ b/server/src/main/java/com/project/Glog/repository/PrPostRepository.java
@@ -24,7 +24,6 @@ public interface PrPostRepository extends JpaRepository<PrPost, Long> {
     @Query("SELECT pr FROM PrPost pr WHERE pr.id=:prId")
     Optional<PrPost> findPrByPrId( @Param("prId") Long prId);
 
-    @Query("SELECT p.category FROM PrPost p WHERE p.category.id=:PrId")
-    Category findByPrId(@Param("PrId") Long PrId);
+
 
 }
diff --git a/server/src/main/java/com/project/Glog/service/PostService.java b/server/src/main/java/com/project/Glog/service/PostService.java
index 858a9aa..d7ac58c 100644
--- a/server/src/main/java/com/project/Glog/service/PostService.java
+++ b/server/src/main/java/com/project/Glog/service/PostService.java
@@ -74,7 +74,7 @@ public Post create(UserPrincipal userPrincipal, MultipartFile multipartFile, Pos
 
         if (req.getPrId() != null) {
             PrPost prPost = prPostRepository.findPrByPrId(req.getPrId()).get();
-            Category ct = prPostRepository.findByPrId(req.getPrId());
+            Category ct = prPost.getCategory();
             post = req.toPost(user, ct, blog);
             post.setPrPost(prPost);
             post.setIsPr(true);
@@ -312,6 +312,13 @@ public String clickLike(UserPrincipal userPrincipal, Long postId) {
         }
     }
 
+    public PostPreviewDtos searchPostsByCategory(Long categoryId) {
+        Category category = categoryRepository.findByCategoryId(categoryId);
+        List<Post> posts = postRepository.findAllByCategory(category);
+
+        return new PostPreviewDtos(posts, posts.size());
+    }
+
     private void setPostHashtag(Post post, List<String> hashtagList) {
         for (String hashtag : hashtagList) {
             PostHashtag postHashtag = new PostHashtag();