diff --git a/hb_server/apps/wf/serializers.py b/hb_server/apps/wf/serializers.py
index 7740acf..5dba5df 100644
--- a/hb_server/apps/wf/serializers.py
+++ b/hb_server/apps/wf/serializers.py
@@ -48,7 +48,7 @@ class CustomFieldSerializer(serializers.ModelSerializer):
         fields = '__all__'
 
 class CustomFieldCreateUpdateSerializer(serializers.ModelSerializer):
-    field_choice = FieldChoiceSerializer(label='选项列表', many=True, required=False)
+    field_choice = FieldChoiceSerializer(label='选项列表', many=True, required=False, write_only=True)
     class Meta:
         model = CustomField
         fields = ['workflow', 'field_type', 'field_key', 'field_name',