diff --git a/packages/vant/src/text-ellipsis/types.ts b/packages/vant/src/text-ellipsis/types.ts
index 4a08f939b..0927dda66 100644
--- a/packages/vant/src/text-ellipsis/types.ts
+++ b/packages/vant/src/text-ellipsis/types.ts
@@ -2,7 +2,7 @@ import type { ComponentPublicInstance } from 'vue';
 import type { TextEllipsisProps } from './TextEllipsis';
 
 export type TextEllipsisExpose = {
-  toggle: () => void;
+  toggle: (expanded?: boolean) => void;
 };
 
 export type TextEllipsisInstance = ComponentPublicInstance<