diff --git a/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/dynamic/DynamicCommentCmdExe.java b/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/dynamic/DynamicCommentCmdExe.java
index 478aa3b4..880c3b7c 100644
--- a/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/dynamic/DynamicCommentCmdExe.java
+++ b/rc-service/rc-service-other/other-application/src/main/java/com/red/circle/other/app/command/dynamic/DynamicCommentCmdExe.java
@@ -96,7 +96,7 @@ public class DynamicCommentCmdExe {
     commentListCO.setToUserId(dynamicComment.getToUserId());
     commentListCO.setContent(dynamicComment.getContent());
     commentListCO.setCreateTime(dynamicComment.getCreateTime());
-    commentListCO.setRootCommentId(dynamicComment.getRootCommentId());
+    commentListCO.setRootCommentId(Objects.isNull(dynamicComment.getRootCommentId()) ? dynamicComment.getId() : dynamicComment.getRootCommentId());
 
     UserProfile userProfile = userProfileMap.get(dynamicComment.getCreateUser());
     if (userProfile != null) {