diff --git a/apps/ecm/service.py b/apps/ecm/service.py
index 3d581800..1d754465 100644
--- a/apps/ecm/service.py
+++ b/apps/ecm/service.py
@@ -718,24 +718,25 @@ def snap_and_analyse(vchannel: TDevice, algo_codes: list, opl: Opl = None):
 
         ecs = [cate for cate in ecs if check_same_allow_minute_and_raise_event(
             cate, ep, None, obj_cate) is True]
-        event = Event()
-        event.global_img = ec_codes['global_img'] if ec_codes.get(
-            'global_img', None) else save_dahua_pic(global_img_o)
-        event.global_img_compressed = compress_global_img(event.global_img)
-        event.vchannel = vchannel
-        event.area = vchannel.area
-        event.obj_cate = obj_cate
-        event.employee = ep
-        event.happen_time = happen_time
-        event.opl = opl
-        event.save()
-        for i in ecs:
-            Eventdo.objects.get_or_create(cate=i, event=event, defaults={
-                'cate': i,
-                'event': event
-            })
-        if event:
-            notify_event(event)
+        if ecs:
+            event = Event()
+            event.global_img = ec_codes['global_img'] if ec_codes.get(
+                'global_img', None) else save_dahua_pic(global_img_o)
+            event.global_img_compressed = compress_global_img(event.global_img)
+            event.vchannel = vchannel
+            event.area = vchannel.area
+            event.obj_cate = obj_cate
+            event.employee = ep
+            event.happen_time = happen_time
+            event.opl = opl
+            event.save()
+            for i in ecs:
+                Eventdo.objects.get_or_create(cate=i, event=event, defaults={
+                    'cate': i,
+                    'event': event
+                })
+            if event:
+                notify_event(event)
 
 
 def handle_xx_event_3(name: str, area: Area):