diff --git a/src/main/java/com/lovenav/service/serviceImpl/CommentServiceImpl.java b/src/main/java/com/lovenav/service/serviceImpl/CommentServiceImpl.java
index ed58299..e94ba40 100644
--- a/src/main/java/com/lovenav/service/serviceImpl/CommentServiceImpl.java
+++ b/src/main/java/com/lovenav/service/serviceImpl/CommentServiceImpl.java
@@ -183,6 +183,11 @@ public class CommentServiceImpl implements CommentService {
     {
 
         String child = commentDao.queryChildId(commentId);
+        if(child == null)
+        {
+            commentDao.deleteByPrimaryKey(commentId);
+            return "处理完成";
+        }
         String [] childrens = child.split(",");
         int flag = 0;
         for(String id : childrens)
diff --git a/src/main/resources/mybatis/CommentDao.xml b/src/main/resources/mybatis/CommentDao.xml
index 427894a..fdc80df 100644
--- a/src/main/resources/mybatis/CommentDao.xml
+++ b/src/main/resources/mybatis/CommentDao.xml
@@ -64,7 +64,7 @@
               FROM ln_comment AS t
               ORDER BY t.id ASC) t1,
              (SELECT @pids := #{commentId,jdbcType=INTEGER}) t2) t3
-    WHERE ischild != '0' and id = #{commentId,jdbcType=INTEGER}
+    WHERE ischild != '0'
     order by id desc
     limit 1
   </select>