diff --git a/packages/element/docs/guide/form-dialog.md b/packages/element/docs/guide/form-dialog.md
index 746dfa9c804..8612739fd2b 100644
--- a/packages/element/docs/guide/form-dialog.md
+++ b/packages/element/docs/guide/form-dialog.md
@@ -51,9 +51,18 @@ type IFormDialogProps = Omit<DialogProps, 'title'> & {
 }
 
 interface IFormDialog {
-  forOpen(middleware: IMiddleware<IFormProps>): IFormDialog
-  forConfirm(middleware: IMiddleware<IFormProps>): IFormDialog
-  forCancel(middleware: IMiddleware<IFormProps>): IFormDialog
+  forOpen(
+    middleware: (
+      props: IFormProps,
+      next: (props?: IFormProps) => Promise<any>
+    ) => any
+  ): IFormDialog
+  forConfirm(
+    middleware: (props: Form, next: (props?: Form) => Promise<any>) => any
+  ): IFormDialog
+  forCancel(
+    middleware: (props: Form, next: (props?: Form) => Promise<any>) => any
+  ): IFormDialog
   open(props?: IFormProps): Promise<any>
   close(): void
 }
diff --git a/packages/element/src/form-dialog/index.ts b/packages/element/src/form-dialog/index.ts
index 394a701cd6f..9a612d59d08 100644
--- a/packages/element/src/form-dialog/index.ts
+++ b/packages/element/src/form-dialog/index.ts
@@ -65,8 +65,8 @@ const getDialogProps = (props: any): IFormDialogProps => {
 
 export interface IFormDialog {
   forOpen(middleware: IMiddleware<IFormProps>): IFormDialog
-  forConfirm(middleware: IMiddleware<IFormProps>): IFormDialog
-  forCancel(middleware: IMiddleware<IFormProps>): IFormDialog
+  forConfirm(middleware: IMiddleware<Form>): IFormDialog
+  forCancel(middleware: IMiddleware<Form>): IFormDialog
   open(props?: IFormProps): Promise<any>
   close(): void
 }