diff --git a/apps/ecm/service.py b/apps/ecm/service.py
index 02d244da..a0c5a8a3 100644
--- a/apps/ecm/service.py
+++ b/apps/ecm/service.py
@@ -334,22 +334,23 @@ def dispatch_dahua_event(data: dict):
             is_happend = check_miss_lcard(ep=ep, area=area)
             if is_happend:
                 cates.append(EventCate.objects.filter(code='miss_lcard').first().id)
-    event = Event()
-    event.global_img = save_dahua_pic(global_img_o)
-    event.area = area
-    event.obj_cate = obj_cate
-    event.vchannel = vchannel
-    event.employee = ep
-    event.happen_time = happen_time
-    event.save()
-    for i in cates:
-        cate = EventCate.objects.get(id=i)
-        Eventdo.objects.get_or_create(cate=cate, event=event, defaults={
-            'cate': cate,
-            'event': event
-        })
-    if event:
-        notify_event(event)
+    if cates:
+        event = Event()
+        event.global_img = save_dahua_pic(global_img_o)
+        event.area = area
+        event.obj_cate = obj_cate
+        event.vchannel = vchannel
+        event.employee = ep
+        event.happen_time = happen_time
+        event.save()
+        for i in cates:
+            cate = EventCate.objects.get(id=i)
+            Eventdo.objects.get_or_create(cate=cate, event=event, defaults={
+                'cate': cate,
+                'event': event
+            })
+        if event:
+            notify_event(event)
 
 
 def rail_in(data):