diff --git a/fuintBackend/fuint-application/src/main/java/com/fuint/business/userManager/service/UserBalanceService.java b/fuintBackend/fuint-application/src/main/java/com/fuint/business/userManager/service/UserBalanceService.java
index 201848a54..4e3d06d15 100644
--- a/fuintBackend/fuint-application/src/main/java/com/fuint/business/userManager/service/UserBalanceService.java
+++ b/fuintBackend/fuint-application/src/main/java/com/fuint/business/userManager/service/UserBalanceService.java
@@ -2,6 +2,7 @@ package com.fuint.business.userManager.service;
 
 import com.baomidou.mybatisplus.extension.service.IService;
 import com.fuint.business.userManager.entity.UserBalance;
+import com.fuint.business.userManager.vo.UserBalanceVo;
 
 import java.util.List;
 
@@ -61,4 +62,6 @@ public interface UserBalanceService extends IService<UserBalance> {
     int initBalance(Integer userId , Integer chainStoreId);
 
 
+    int subtractUserBalanceByLock(UserBalanceVo balance);
+
 }
diff --git a/fuintBackend/fuint-application/src/main/java/com/fuint/business/userManager/service/impl/UserBalanceServiceImpl.java b/fuintBackend/fuint-application/src/main/java/com/fuint/business/userManager/service/impl/UserBalanceServiceImpl.java
index bf366b0b9..cc574db03 100644
--- a/fuintBackend/fuint-application/src/main/java/com/fuint/business/userManager/service/impl/UserBalanceServiceImpl.java
+++ b/fuintBackend/fuint-application/src/main/java/com/fuint/business/userManager/service/impl/UserBalanceServiceImpl.java
@@ -67,6 +67,7 @@ public class UserBalanceServiceImpl extends ServiceImpl<UserBalanceMapper, UserB
     @Resource
     RedisLock redisLock;
 
+    @Override
     public int subtractUserBalanceByLock(UserBalanceVo balance) {
         String lockKey = "userChangeBalance"+balance.getMtUserId()+balance.getChainStoreId();
         Boolean flag = redisLock.tryLock(lockKey, 5001, 5000, TimeUnit.MILLISECONDS);