diff --git a/src/components/Modal/src/typing.ts b/src/components/Modal/src/typing.ts
index 36a7e7c..fa5604c 100644
--- a/src/components/Modal/src/typing.ts
+++ b/src/components/Modal/src/typing.ts
@@ -21,8 +21,8 @@ export type UseModalReturnType = [RegisterFn, ReturnMethods];
 
 export interface ReturnInnerMethods extends ModalMethods {
   closeModal: () => void;
-  changeLoading: (loading: boolean) => void;
-  changeOkLoading: (loading: boolean) => void;
+  changeLoading: (loading?: boolean) => void;
+  changeOkLoading: (loading?: boolean) => void;
   getVisible?: ComputedRef<boolean>;
   redoModalHeight: () => void;
 }
diff --git a/src/views/workflow/extension/form/helper/WorkflowFormDesign.vue b/src/views/workflow/extension/form/helper/WorkflowFormDesign.vue
index effbd1e..720a9fd 100644
--- a/src/views/workflow/extension/form/helper/WorkflowFormDesign.vue
+++ b/src/views/workflow/extension/form/helper/WorkflowFormDesign.vue
@@ -54,7 +54,8 @@
   };
   const emit = defineEmits(['success', 'register']);
   const microAppStore = useMicroAppStore();
-  const [registerModal, { setModalProps, closeModal }] = useModalInner(async (data: BoxPayload = { _tag: '' }) => {
+  const [registerModal, { setModalProps, closeModal, changeLoading }] = useModalInner(async (data: BoxPayload = { _tag: '' }) => {
+    changeLoading();
     state.formDesignApp = loadMicroApp(Object.assign({} , apps.find(item => item.name == 'form-design'), {
       container: '#formDesign',
       props: {
@@ -63,6 +64,9 @@
         [GlStateEnum.FORM_DESIGN_APP_PROPS_KEY]: formDesignProps
       }
     }), { sandbox: { experimentalStyleIsolation: true }});
+    state.formDesignApp.mountPromise.then(() => {
+      changeLoading(false);
+    });
     // 处理清除脏数据
     state.form = {};
     formDesignProps.options = {};
diff --git a/src/views/workflow/extension/formJson/FormJsonModal.vue b/src/views/workflow/extension/formJson/FormJsonModal.vue
index b54f1a8..b4cf8e4 100644
--- a/src/views/workflow/extension/formJson/FormJsonModal.vue
+++ b/src/views/workflow/extension/formJson/FormJsonModal.vue
@@ -38,7 +38,8 @@ const formPreviewProps = {
 };
 const emit = defineEmits(['success', 'register']);
 const microAppStore = useMicroAppStore();
-const [registerModal, { setModalProps, closeModal }] = useModalInner(async (data: BoxPayload = { _tag: '' }) => {
+const [registerModal, { setModalProps, closeModal, changeLoading }] = useModalInner(async (data: BoxPayload = { _tag: '' }) => {
+  changeLoading();
   state.formDesignApp = loadMicroApp(Object.assign({} , apps.find(item => item.name == 'form-design'), {
     container: '#formPreview',
     props: {
@@ -48,6 +49,9 @@ const [registerModal, { setModalProps, closeModal }] = useModalInner(async (data
       mountApp: FORM_DESIGN_APP_COMPONENTS.PREVIEW
     }
   }), { sandbox: { experimentalStyleIsolation: true }});
+  state.formDesignApp.mountPromise.then(() => {
+    changeLoading(false);
+  });
   data?.json && (formPreviewProps.options = eval('(' + data.json + ')') );
   const props: Partial<ModalProps> = { confirmLoading: false };
   props.title = '预览流程表单';