diff --git a/src/main/java/iet/ustb/sf/service/impl/UtilServiceImpl.java b/src/main/java/iet/ustb/sf/service/impl/UtilServiceImpl.java
index 067c6ae..89b33f6 100644
--- a/src/main/java/iet/ustb/sf/service/impl/UtilServiceImpl.java
+++ b/src/main/java/iet/ustb/sf/service/impl/UtilServiceImpl.java
@@ -356,7 +356,7 @@ public class UtilServiceImpl implements UtilService {
         queryWrapper.eq("target_id", targetId);
         queryWrapper.ne("warn_level", "999");
         List<Monitor> monitorList = monitorMapper.selectList(queryWrapper);
-        Map<String, Monitor> map = monitorList.stream().collect(Collectors.toMap(Monitor::getXShow, vo -> vo));
+        Map<String, List<Monitor>> map = monitorList.stream().collect(Collectors.groupingBy(Monitor::getXShow));
 
         List<Rule> ruleList = ruleMapper.selectList(new QueryWrapper<Rule>().eq("target_id", targetId));
         if ("delete".equals(type) && ruleList.isEmpty()) {
@@ -375,8 +375,8 @@ public class UtilServiceImpl implements UtilService {
 
         List<Monitor> saveMonitorList = new ArrayList<>();
         for (TargetData targetData : targetDataList) {
-            Monitor tmp = map.get(targetData.getXShow());
-            if (tmp == null) {
+            List<Monitor> tmp = map.get(targetData.getXShow());
+            if (tmp == null || tmp.isEmpty()) {
                 if ("delete".equals(type)) {
                     Monitor monitor = getInitMonitor(targetData, target, addRule);
                     monitor.setWarnLevel(998);