diff --git a/src/main/java/com/bao/dating/service/impl/PostServiceImpl.java b/src/main/java/com/bao/dating/service/impl/PostServiceImpl.java
index 6a5e7af4..e6478cb8 100644
--- a/src/main/java/com/bao/dating/service/impl/PostServiceImpl.java
+++ b/src/main/java/com/bao/dating/service/impl/PostServiceImpl.java
@@ -166,7 +166,7 @@ public class PostServiceImpl implements PostService {
      */
     @Override
     public void deletePostById(Integer postId) {
-        postMapper.deletePostById(postId);
+        postMapper.deletePostById(Long.valueOf(postId));
     }
 
     @Override