diff --git a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/service/WarningServiceImpl.java b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/service/WarningServiceImpl.java
index 2604d989..215f7818 100644
--- a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/service/WarningServiceImpl.java
+++ b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/service/WarningServiceImpl.java
@@ -281,6 +281,8 @@ public class WarningServiceImpl implements WarningService {
         QueryWrapper<WarningMsg> queryWrapper = new QueryWrapper<>();
         queryWrapper.eq("deviceid",status.getDeviceid());
         queryWrapper.eq("code",warningCode);
+        queryWrapper.orderByDesc("createtime");
+        queryWrapper.last("limit 1");
         WarningMsg warningMsg = warningMsgMapper.selectOne(queryWrapper);
         if(warningMsg!=null){
             logger.info("update warningMsg {}",warningMsg.getId());