diff --git a/apps/ecm/service.py b/apps/ecm/service.py
index 0e489f32..5a10ec47 100644
--- a/apps/ecm/service.py
+++ b/apps/ecm/service.py
@@ -26,6 +26,7 @@ from threading import Thread
 from apps.utils.tools import timestamp_to_time
 from apps.third.tapis import xxapis
 import logging
+from datetime import datetime
 myLogger = logging.getLogger('log')
 requests.packages.urllib3.disable_warnings()
 
@@ -602,7 +603,15 @@ def get_area_from_point(x: int, y: int, floorNo: str, area_fix_id):
 def snap_and_analyse(vchannel: TDevice, algo_codes: list, opl: Opl = None):
     global_img_o = dhClient.snap(vchannel.code, raise_exception=False)
     happen_time = timezone.now()
-    if global_img_o is None:
+    if global_img_o is None:  # 说明视频抓拍失败
+        ckey = 'vchannel_' + vchannel.id
+        cvalue = cache.get(ckey, None)
+        if cvalue:
+            try:
+                cvalue.update({'snap': 'fail', 'snap_time':  datetime.strftime("%Y-%m-%d %H:%M:%S")})
+                cache.set(ckey, cvalue)
+            except:
+                pass
         return
     ec_codes = ai_analyse_2(algo_codes, global_img=global_img_o)  # 算法处理返回的事件结果
     if ec_codes:
@@ -642,3 +651,4 @@ def snap_and_analyse(vchannel: TDevice, algo_codes: list, opl: Opl = None):
             })
         if event:
             notify_event(event)
+
diff --git a/apps/ecm/views.py b/apps/ecm/views.py
index 98c12ecd..9530744c 100644
--- a/apps/ecm/views.py
+++ b/apps/ecm/views.py
@@ -25,6 +25,7 @@ from apps.ecm.serializers import (AlgoChannelCreateSerializer,
 from apps.ecm.service import update_remind_read
 from apps.utils.viewsets import CustomGenericViewSet, CustomModelViewSet
 from apps.utils.export import export_excel_img
+from apps.ecm.tasks import monitor_check
 
 obj_cate_dict = {'people': '人员', 'opl': '作业', 'other': '其他'}
 mark_dict = {10: '正常', 20: '误报'}
@@ -69,6 +70,16 @@ class AlgoChannelViewSet(CreateModelMixin, DestroyModelMixin, ListModelMixin, Cu
             })
         return Response()
 
+    def perform_create(self, serializer):
+        ins = super().perform_create(serializer)
+        if ins.always_on:
+            monitor_check([ins.vchannel.id])
+    
+    def perform_destroy(self, instance):
+        monitor_check([instance.vchannel.id])
+        instance.delete()
+            
+
 
 class NotifySettingViewSet(CustomModelViewSet):
     queryset = NotifySetting.objects.all()