diff --git a/cmd/dashboard/controller/member_api.go b/cmd/dashboard/controller/member_api.go
index 5c4e292..88b54e4 100644
--- a/cmd/dashboard/controller/member_api.go
+++ b/cmd/dashboard/controller/member_api.go
@@ -239,7 +239,7 @@ func (ma *memberAPI) addOrEditMonitor(c *gin.Context) {
 		err = m.InitSkipServers()
 	}
 	if err == nil {
-		// 旧版本服务监控可能不存在通知组 为其添加默认的通知组
+		// 保证NotificationTag不为空
 		if m.NotificationTag == "" {
 			m.NotificationTag = "default"
 		}
@@ -292,6 +292,10 @@ func (ma *memberAPI) addOrEditCron(c *gin.Context) {
 	}
 	tx := singleton.DB.Begin()
 	if err == nil {
+		// 保证NotificationTag不为空
+		if cr.NotificationTag == "" {
+			cr.NotificationTag = "default"
+		}
 		if cf.ID == 0 {
 			err = tx.Create(&cr).Error
 		} else {
@@ -483,6 +487,10 @@ func (ma *memberAPI) addOrEditAlertRule(c *gin.Context) {
 		enable := arf.Enable == "on"
 		r.Enable = &enable
 		r.ID = arf.ID
+		//保证NotificationTag不为空
+		if r.NotificationTag == "" {
+			r.NotificationTag = "default"
+		}
 		if r.ID == 0 {
 			err = singleton.DB.Create(&r).Error
 		} else {
@@ -567,6 +575,10 @@ func (ma *memberAPI) updateSetting(c *gin.Context) {
 	singleton.Conf.Site.CustomCode = sf.CustomCode
 	singleton.Conf.Site.ViewPassword = sf.ViewPassword
 	singleton.Conf.Oauth2.Admin = sf.Admin
+	// 保证NotificationTag不为空
+	if singleton.Conf.IPChangeNotificationTag == "" {
+		singleton.Conf.IPChangeNotificationTag = "default"
+	}
 	if err := singleton.Conf.Save(); err != nil {
 		c.JSON(http.StatusOK, model.Response{
 			Code:    http.StatusBadRequest,
diff --git a/resource/template/dashboard/setting.html b/resource/template/dashboard/setting.html
index d499070..eeb25b1 100644
--- a/resource/template/dashboard/setting.html
+++ b/resource/template/dashboard/setting.html
@@ -53,7 +53,7 @@
                         value="{{.Conf.IgnoredIPNotification}}">
                 </div>
                 <div class="field">
-                    <label>提醒发送指定的通知分组</label>
+                    <label>提醒发送至指定的通知分组</label>
                     <input type="text" name="IPChangeNotificationTag" placeholder="" value="{{.Conf.IPChangeNotificationTag}}">
                 </div>
                 <div class="field">
diff --git a/service/singleton/servicesentinel.go b/service/singleton/servicesentinel.go
index 23ccd76..714091a 100644
--- a/service/singleton/servicesentinel.go
+++ b/service/singleton/servicesentinel.go
@@ -149,23 +149,23 @@ func (ss *ServiceSentinel) loadMonitorHistory() {
 	var err error
 	ss.monitorsLock.Lock()
 	defer ss.monitorsLock.Unlock()
-	for _, monitor := range monitors {
+	for i := range monitors {
 		// 旧版本可能不存在通知组 为其设置默认组
-		if monitor.NotificationTag == "" {
-			monitor.NotificationTag = "default"
-			DB.Save(monitor)
+		if monitors[i].NotificationTag == "" {
+			monitors[i].NotificationTag = "default"
+			DB.Save(monitors[i])
 		}
-		task := *monitor
+		task := *monitors[i]
 		// 通过cron定时将服务监控任务传递给任务调度管道
-		monitor.CronJobID, err = Cron.AddFunc(task.CronSpec(), func() {
+		monitors[i].CronJobID, err = Cron.AddFunc(task.CronSpec(), func() {
 			ss.dispatchBus <- task
 		})
 		if err != nil {
 			panic(err)
 		}
-		ss.monitors[monitor.ID] = monitor
-		ss.serviceCurrentStatusData[monitor.ID] = make([]model.MonitorHistory, _CurrentStatusSize)
-		ss.serviceStatusToday[monitor.ID] = &_TodayStatsOfMonitor{}
+		ss.monitors[monitors[i].ID] = monitors[i]
+		ss.serviceCurrentStatusData[monitors[i].ID] = make([]model.MonitorHistory, _CurrentStatusSize)
+		ss.serviceStatusToday[monitors[i].ID] = &_TodayStatsOfMonitor{}
 	}
 
 	year, month, day := time.Now().Date()