diff --git a/src/components/form-designer/toolbar-panel/index.vue b/src/components/form-designer/toolbar-panel/index.vue
index ae72b81..0e56b54 100644
--- a/src/components/form-designer/toolbar-panel/index.vue
+++ b/src/components/form-designer/toolbar-panel/index.vue
@@ -265,8 +265,11 @@
     computed: {
       formJson() {
         return {
-          widgetList: this.designer.widgetList,
-          formConfig: this.designer.formConfig
+          // widgetList: this.designer.widgetList,
+          // formConfig: this.designer.formConfig
+
+          widgetList: deepClone(this.designer.widgetList),
+          formConfig: deepClone(this.designer.formConfig)
         }
       },
 
diff --git a/src/components/form-render/index.vue b/src/components/form-render/index.vue
index 3386973..28ad263 100644
--- a/src/components/form-render/index.vue
+++ b/src/components/form-render/index.vue
@@ -94,9 +94,12 @@
         formDataModel: {
           //
         },
+
         widgetRefList: {},
         subFormRefList: {},
         formId: null,  //表单唯一Id，用于区分页面上的多个v-form-render组件！！
+
+        externalComponents:  {},  //外部组件实例集合
       }
     },
     computed: {
@@ -629,6 +632,33 @@
         return getAllContainerWidgets(this.formJsonObj.widgetList)
       },
 
+      /**
+       * 增加外部组件引用，可通过getEC()方法获取外部组件，以便在VForm内部调用外部组件方法
+       * @param componentName 外部组件名称
+       * @param externalComponent 外部组件实例
+       */
+      addEC(componentName, externalComponent) {
+        this.externalComponents[componentName] = externalComponent
+      },
+
+      /**
+       * 判断外部组件是否可获取
+       * @param componentName 外部组件名称
+       * @returns {boolean}
+       */
+      hasEC(componentName) {
+        return this.externalComponents.hasOwnProperty(componentName)
+      },
+
+      /**
+       * 获取外部组件实例
+       * @param componentName
+       * @returns {*}
+       */
+      getEC(componentName) {
+        return this.externalComponents[componentName]
+      },
+
       //--------------------- 以上为组件支持外部调用的API方法 end ------------------//
 
     },