diff --git a/apps/inm/serializers.py b/apps/inm/serializers.py
index 6aef4c62..1bca21e5 100644
--- a/apps/inm/serializers.py
+++ b/apps/inm/serializers.py
@@ -426,6 +426,6 @@ class PackSerializer(CustomModelSerializer):
         return super().create(validated_data)
 
 
-class PackMioSerializer(CustomModelSerializer):
+class PackMioSerializer(serializers.Serializer):
     mioitems = serializers.ListField(child=serializers.CharField(), label="明细ID")
     pack = serializers.CharField(label="包装箱ID")
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