diff --git a/server/like-front/src/main/java/com/mdd/front/service/impl/UserServiceImpl.java b/server/like-front/src/main/java/com/mdd/front/service/impl/UserServiceImpl.java
index 6bdfb362..ac523449 100644
--- a/server/like-front/src/main/java/com/mdd/front/service/impl/UserServiceImpl.java
+++ b/server/like-front/src/main/java/com/mdd/front/service/impl/UserServiceImpl.java
@@ -448,13 +448,15 @@ public class UserServiceImpl implements IUserService {
 
         // 已有授权，返回已绑定微信。 没有授权，绑定微信
         if (!StringUtils.isBlank(unionId)) {
-            UserAuth userAuthUnionId = userAuthMapper.selectOne(new QueryWrapper<UserAuth>()
-                    .eq("unionid", unionId)
-                    .last("limit 1"));
+            if (unionId.equals("0") == false) {
+                UserAuth userAuthUnionId = userAuthMapper.selectOne(new QueryWrapper<UserAuth>()
+                        .eq("unionid", unionId)
+                        .last("limit 1"));
 
-            if (userAuthUnionId != null && !userId.equals(userAuthUnionId.getUserId())) {
-                // 该微信已绑定
-                throw new OperateException("该微信已绑定");
+                if (userAuthUnionId != null && !userId.equals(userAuthUnionId.getUserId())) {
+                    // 该微信已绑定
+                    throw new OperateException("该微信已绑定");
+                }
             }
         }