diff --git a/src/tab/README.md b/src/tab/README.md
index 5fd0900b3..93d3cf308 100644
--- a/src/tab/README.md
+++ b/src/tab/README.md
@@ -140,7 +140,7 @@ Use title slot to custom tab title.
 
 ```html
 <van-tabs v-model:active="active">
-  <van-tab v-for="index in 2" :key="index">
+  <van-tab v-for="index in 2">
     <template #title> <van-icon name="more-o" />tab </template>
     content {{ index }}
   </van-tab>
diff --git a/src/tab/README.zh-CN.md b/src/tab/README.zh-CN.md
index c41726483..e8df50f05 100644
--- a/src/tab/README.zh-CN.md
+++ b/src/tab/README.zh-CN.md
@@ -147,7 +147,7 @@ export default {
 
 ```html
 <van-tabs v-model:active="active">
-  <van-tab v-for="index in 2" :key="index">
+  <van-tab v-for="index in 2">
     <template #title> <van-icon name="more-o" />选项 </template>
     内容 {{ index }}
   </van-tab>