diff --git a/gan-modules/ruoyi-gan/src/main/java/com/ruoyi/app/service/impl/AppDynamicCommentServiceImpl.java b/gan-modules/ruoyi-gan/src/main/java/com/ruoyi/app/service/impl/AppDynamicCommentServiceImpl.java
index 3fd9bb4..bdcd29a 100644
--- a/gan-modules/ruoyi-gan/src/main/java/com/ruoyi/app/service/impl/AppDynamicCommentServiceImpl.java
+++ b/gan-modules/ruoyi-gan/src/main/java/com/ruoyi/app/service/impl/AppDynamicCommentServiceImpl.java
@@ -61,9 +61,9 @@ public class AppDynamicCommentServiceImpl implements IAppDynamicCommentService
     public int insertAppDynamicComment(AppDynamicComment appDynamicComment)
     {
         if (appDynamicComment.getParentId() != null && appDynamicComment.getParentId() > 0) {
-            AppDynamicComment entity = appDynamicCommentMapper.selectAppDynamicCommentById(appDynamicComment.getId());
+            AppDynamicComment entity = appDynamicCommentMapper.selectAppDynamicCommentById(appDynamicComment.getParentId());
             appDynamicComment.setParentIds(appDynamicComment.getParentId() + ",");
-            if (StringUtils.isNotBlank(entity.getParentIds())) {
+            if (entity != null && StringUtils.isNotBlank(entity.getParentIds())) {
                 appDynamicComment.setParentIds(entity.getParentIds() + appDynamicComment.getParentId() + ",");
             }
         }