diff --git a/apps/vm/serializers.py b/apps/vm/serializers.py
index bb5b3264..7d699d21 100644
--- a/apps/vm/serializers.py
+++ b/apps/vm/serializers.py
@@ -43,7 +43,7 @@ class VpeopleCreateSerializer(CustomModelSerializer):
             raise ParseError('项目非创建状态不可新增成员')
         ins = super().create(validated_data)
         if ins.is_main:
-            Vpeople.objects.filter(visit=validated_data['visit']).exclude(id__in=ins.id).update(is_main=False)
+            Vpeople.objects.filter(visit=validated_data['visit']).exclude(id=ins.id).update(is_main=False)
         return ins