diff --git a/backend/uc/src/main/java/com/hotent/uc/manager/impl/UserManagerImpl.java b/backend/uc/src/main/java/com/hotent/uc/manager/impl/UserManagerImpl.java
index 2ad4276..2234f45 100644
--- a/backend/uc/src/main/java/com/hotent/uc/manager/impl/UserManagerImpl.java
+++ b/backend/uc/src/main/java/com/hotent/uc/manager/impl/UserManagerImpl.java
@@ -3915,6 +3915,7 @@ public class UserManagerImpl extends BaseManagerImpl <UserDao, User> implements 
 	public CommonResult<String> bindOpenId(String account, String openid) {
 		if(StringUtil.isNotEmpty(account)){
 			try {
+				userUniteManager.remove(Wrappers.<UserUnite>lambdaQuery().eq(UserUnite::getOpenId,openid));
 				User u = this.getByAccount(account);
 				UserUnite userUnite = new UserUnite();
 				userUnite.setUserId(u.getId());
--
libgit2 0.21.2