diff --git a/examples/panel.tsx b/examples/panel.tsx
index 96674124..277061a7 100644
--- a/examples/panel.tsx
+++ b/examples/panel.tsx
@@ -101,7 +101,6 @@ export default () => {
         }}
         defaultActiveKey={['bj', 'haidian']}
         disabled={disabled}
-        defaultActiveKey={['bj', 'haidian']}
       />
 
       <Cascader.Panel options={addressOptions} disabled={disabled} direction="rtl" />