diff --git a/packages/vant/src/tabs/Tabs.tsx b/packages/vant/src/tabs/Tabs.tsx
index 7f0809a40..b4cfe595c 100644
--- a/packages/vant/src/tabs/Tabs.tsx
+++ b/packages/vant/src/tabs/Tabs.tsx
@@ -365,6 +365,7 @@ export default defineComponent({
     const renderNav = () =>
       children.map((item, index) => (
         <TabsTitle
+          key={item.id}
           v-slots={{ title: item.$slots.title }}
           id={`${id}-${index}`}
           ref={setTitleRefs(index)}