diff --git a/smtweb-framework/bpm/src/main/java/cc/smtweb/system/bpm/web/design/form/ModelFormDelHandler.java b/smtweb-framework/bpm/src/main/java/cc/smtweb/system/bpm/web/design/form/ModelFormDelHandler.java
index dc22549..f5639fd 100644
--- a/smtweb-framework/bpm/src/main/java/cc/smtweb/system/bpm/web/design/form/ModelFormDelHandler.java
+++ b/smtweb-framework/bpm/src/main/java/cc/smtweb/system/bpm/web/design/form/ModelFormDelHandler.java
@@ -28,7 +28,7 @@ public class ModelFormDelHandler extends DefaultDelHandler<ModelForm> {
     @Override
     protected void delDb() {
         EntityDao<ModelForm> dao = DbEngine.getInstance().findDao(ModelForm.class);
-        listDeled =  ModelFormCache.getInstance().getListByModule(id);
+        listDeled = new HashSet<>(ModelFormCache.getInstance().getListByModule(id));
         if (CommUtil.isEmpty(listDeled)) {
             dao.deleteEntity(id);
         } else {