diff --git a/apps/vm/serializers.py b/apps/vm/serializers.py
index 74a73c31..e3b1d0fd 100644
--- a/apps/vm/serializers.py
+++ b/apps/vm/serializers.py
@@ -60,6 +60,8 @@ class VpeopleCreateSerializer(CustomModelSerializer):
                 pass
             else:
                 raise ParseError('访客信息不全,请完善后再试')
+        if Vpeople.objects.filter(visit=validated_data['visit'], visitor=validated_data['visitor']).exists():
+            raise ParseError('该访客已选中')
         ins = super().create(validated_data)
         if ins.is_main:
             Vpeople.objects.filter(visit=validated_data['visit']).exclude(id=ins.id).update(is_main=False)