diff --git a/src/main/java/com/example/helloworldmvc/converter/CommunityConverter.java b/src/main/java/com/example/helloworldmvc/converter/CommunityConverter.java
index 028ac79..ae955fb 100644
--- a/src/main/java/com/example/helloworldmvc/converter/CommunityConverter.java
+++ b/src/main/java/com/example/helloworldmvc/converter/CommunityConverter.java
@@ -68,6 +68,7 @@ public static CommunityResponseDTO.PostDetailDTO toPostDetailDTO(Community commu
         return CommunityResponseDTO.PostDetailDTO.builder()
                 .title(community.getTitle())
                 .content(community.getContent())
+                .category_id(toCategoryId(community.getCommunityCategory()))
                 .created_at(community.getCreatedAt())
                 .isOwner(isOwner)
                 .fileList(list)
diff --git a/src/main/java/com/example/helloworldmvc/web/dto/CommunityResponseDTO.java b/src/main/java/com/example/helloworldmvc/web/dto/CommunityResponseDTO.java
index 6363f76..2124f8c 100644
--- a/src/main/java/com/example/helloworldmvc/web/dto/CommunityResponseDTO.java
+++ b/src/main/java/com/example/helloworldmvc/web/dto/CommunityResponseDTO.java
@@ -46,6 +46,7 @@ public static class PostDTO{
     public static class PostDetailDTO{
         String title;
         String content;
+        Long category_id;
         LocalDateTime created_at;
         List<FileDTO.FileDetailRes> fileList;
         List<CommentDTO> commentDTOList;