diff --git a/docs/markdown/quickstart.en-US.md b/docs/markdown/quickstart.en-US.md
index c5bcc4c62..a6bc206d5 100644
--- a/docs/markdown/quickstart.en-US.md
+++ b/docs/markdown/quickstart.en-US.md
@@ -122,6 +122,8 @@ Vant use `px` as size units by default，you can use tools such as `postcss-pxto
 - [postcss-pxtorem](https://github.com/cuth/postcss-pxtorem)
 - [lib-flexible](https://github.com/amfe/lib-flexible)
 
+#### PostCSS Config
+
 postcss config example:
 
 ```js
diff --git a/docs/markdown/quickstart.zh-CN.md b/docs/markdown/quickstart.zh-CN.md
index 0d146bde0..e3d1d7d99 100644
--- a/docs/markdown/quickstart.zh-CN.md
+++ b/docs/markdown/quickstart.zh-CN.md
@@ -122,11 +122,13 @@ vant.Toast('提示');
 
 ### Rem 适配
 
-Vant 中的样式默认使用`px`作为单位，如果需要使用`rem`单位，推荐使用以下两个工具
+Vant 中的样式默认使用`px`作为单位，如果需要使用`rem`单位，推荐使用以下两个工具：
 
 - [postcss-pxtorem](https://github.com/cuth/postcss-pxtorem) 是一款 postcss 插件，用于将单位转化为 rem
 - [lib-flexible](https://github.com/amfe/lib-flexible) 用于设置 rem 基准值
 
+#### PostCSS 配置
+
 下面提供了一份基本的 postcss 配置，可以在此配置的基础上根据项目需求进行修改
 
 ```js
@@ -145,6 +147,20 @@ module.exports = {
 
 > 注意：在配置 postcss-loader 时，应避免 ignore node_modules 目录，这会导致 Vant 的样式无法被编译
 
+### 底部安全区适配
+
+iPhone X 等机型底部存在底部指示条，指示条的操作区域与页面底部存在重合，容易导致用户误操作，因此我们需要针对这些机型进行底部安全区适配。Vant 中部分组件提供了`safe-area-inset-bottom`属性，设置该属性后，即可在对应的机型上开启适配，如下示例：
+
+```html
+<!-- 在 head 标签中添加 meta 标签，并设置 viewport-fit=cover 值 -->
+<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, viewport-fit=cover">
+
+<!-- 开启 safe-area-inset-bottom 属性 -->
+<van-number-keyboard safe-area-inset-bottom />
+```
+
+<img src="https://b.yzcdn.cn/vant/safearea.png" style="margin-top: 30px;">
+
 ### 在桌面端使用
 
 Vant 组件默认只适配了移动端设备，如果你需要在桌面端使用 vant，可以引入我们提供的 [@vant/touch-emulator](https://github.com/youzan/vant/tree/dev/packages/vant-touch-emulator).
diff --git a/docs/site/components/DemoPages.vue b/docs/site/components/DemoPages.vue
index 0a05930cb..218de7a87 100644
--- a/docs/site/components/DemoPages.vue
+++ b/docs/site/components/DemoPages.vue
@@ -109,9 +109,7 @@ export default {
     }
 
     h4 {
-      font-weight: normal;
-      font-size: 14px;
-      line-height: 20px;
+      margin-top: 0;
     }
 
     img {
diff --git a/package.json b/package.json
index bf365ac1d..faa253410 100644
--- a/package.json
+++ b/package.json
@@ -71,7 +71,7 @@
     "@babel/preset-typescript": "^7.6.0",
     "@types/jest": "^24.0.16",
     "@vant/cli": "^1.0.6",
-    "@vant/doc": "^2.5.6",
+    "@vant/doc": "^2.5.7",
     "@vant/eslint-config": "^1.2.5",
     "@vant/markdown-loader": "^2.2.0",
     "@vant/markdown-vetur": "^1.0.0",
diff --git a/packages/vant-doc/package.json b/packages/vant-doc/package.json
index d3b11042e..b937c4060 100644
--- a/packages/vant-doc/package.json
+++ b/packages/vant-doc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@vant/doc",
-  "version": "2.5.6",
+  "version": "2.5.7",
   "description": "vant document template",
   "main": "./lib/index.js",
   "publishConfig": {
diff --git a/packages/vant-doc/src/component/Content.vue b/packages/vant-doc/src/component/Content.vue
index 8cc96ab01..23210f931 100644
--- a/packages/vant-doc/src/component/Content.vue
+++ b/packages/vant-doc/src/component/Content.vue
@@ -210,14 +210,13 @@ export default {
     }
 
     h3 {
-      font-size: 20px;
-
       + p code {
         margin: 0;
       }
 
       a {
         color: inherit;
+        font-size: 20px;
       }
     }
   }
diff --git a/packages/vant-doc/src/component/Header.vue b/packages/vant-doc/src/component/Header.vue
index 5a5073cd5..cd2f108e9 100644
--- a/packages/vant-doc/src/component/Header.vue
+++ b/packages/vant-doc/src/component/Header.vue
@@ -203,7 +203,7 @@ export default {
     }
 
     img {
-      width: 26px;
+      width: 24px;
       margin-right: 10px;
     }
 
diff --git a/src/action-sheet/README.md b/src/action-sheet/README.md
index 3e182394a..c81e039a8 100644
--- a/src/action-sheet/README.md
+++ b/src/action-sheet/README.md
@@ -106,7 +106,7 @@ export default {
 | lock-scroll | Whether to lock background scroll | *boolean* | `true` | - |
 | duration | Transition duration, unit second | *number* | `0.3` | 2.0.3 |
 | get-container | Return the mount node for action-sheet | *string \| () => HTMLElement* | - | - |
-| safe-area-inset-bottom | Whether to enable bottom safe area adaptation, to enable those features use `viewport-fit=cover` in the `viewport` meta tag | *boolean* | `false` | - |
+| safe-area-inset-bottom | Whether to enable bottom safe area adaptation | *boolean* | `false` | - |
 
 ### Events
 
diff --git a/src/action-sheet/README.zh-CN.md b/src/action-sheet/README.zh-CN.md
index 5883108f3..5ede23096 100644
--- a/src/action-sheet/README.zh-CN.md
+++ b/src/action-sheet/README.zh-CN.md
@@ -120,7 +120,7 @@ export default {
 | lock-scroll | 是否锁定背景滚动 | *boolean* | `true` | - |
 | duration | 动画时长，单位秒 | *number* | `0.3` | 2.0.3 |
 | get-container | 指定挂载的节点，可以传入选择器，<br>或一个返回节点的函数 | *string \| () => HTMLElement* | - | - |
-| safe-area-inset-bottom | 是否开启 iPhone X 底部安全区适配，需要在 `viewport` meta 标签中设置 `viewport-fit=cover` | *boolean* | `false` | - |
+| safe-area-inset-bottom | 是否开启底部安全区适配，[详细说明](#/zh-CN/quickstart#di-bu-an-quan-qu-gua-pei) | *boolean* | `false` | - |
 
 ### Events
 
@@ -136,7 +136,7 @@ export default {
 
 ### Action 数据结构
 
-`Props`中的`actions`为一个对象数组，数组中的每一个对象配置每一列，每一列有以下`key`：
+`actions`属性为一个对象数组，数组中的每个对象配置一列，对象可以包含以下值：
 
 | 键名 | 说明 | 类型 |
 |------|------|------|
diff --git a/src/goods-action/README.md b/src/goods-action/README.md
index 7d86272d9..2db111d60 100644
--- a/src/goods-action/README.md
+++ b/src/goods-action/README.md
@@ -44,13 +44,13 @@ export default {
 
 ### Icon info
 
-Use `info` prop to show messages in upper right corner of icon
+Use `info` prop to show badge in icon
 
 ```html
 <van-goods-action>
   <van-goods-action-icon icon="chat-o" text="Icon1" />
   <van-goods-action-icon icon="cart-o" text="Icon2" info="5" />
-  <van-goods-action-icon icon="shop-o" text="Icon3" />
+  <van-goods-action-icon icon="shop-o" text="Icon3" info=12" />
   <van-goods-action-button type="warning" text="Button1" />
   <van-goods-action-button type="danger" text="Button2" />
 </van-goods-action>
@@ -73,7 +73,7 @@ Use `info` prop to show messages in upper right corner of icon
 
 | Attribute | Description | Type | Default | Version |
 |------|------|------|------|------|
-| safe-area-inset-bottom | Whether to enable bottom safe area adaptation, to enable those features use `viewport-fit=cover` in the `viewport` meta tag | *boolean* | `false` | - |
+| safe-area-inset-bottom | Whether to enable bottom safe area adaptation | *boolean* | `false` | - |
 
 ### GoodsActionIcon Props
 
diff --git a/src/goods-action/README.zh-CN.md b/src/goods-action/README.zh-CN.md
index 9098309c3..c24b57ffe 100644
--- a/src/goods-action/README.zh-CN.md
+++ b/src/goods-action/README.zh-CN.md
@@ -42,15 +42,15 @@ export default {
 }
 ```
 
-### 图标提示
+### 徽标提示
 
-通过`info`属性在图标右上角增加相应的提示
+通过`info`属性在图标右上角显示徽标
 
 ```html
 <van-goods-action>
   <van-goods-action-icon icon="chat-o" text="客服" />
   <van-goods-action-icon icon="cart-o" text="购物车" info="5" />
-  <van-goods-action-icon icon="shop-o" text="店铺" />
+  <van-goods-action-icon icon="shop-o" text="店铺" info=12" />
   <van-goods-action-button type="warning" text="加入购物车" />
   <van-goods-action-button type="danger" text="立即购买" />
 </van-goods-action>
@@ -75,7 +75,7 @@ export default {
 
 | 参数 | 说明 | 类型 | 默认值 | 版本 |
 |------|------|------|------|------|
-| safe-area-inset-bottom | 是否开启 iPhone X 底部安全区适配，需要在 `viewport` meta 标签中设置 `viewport-fit=cover` | *boolean* | `false` | - |
+| safe-area-inset-bottom | 是否开启底部安全区适配，[详细说明](#/zh-CN/quickstart#di-bu-an-quan-qu-gua-pei) | *boolean* | `false` | - |
 
 ### GoodsActionIcon Props
 
diff --git a/src/goods-action/demo/index.vue b/src/goods-action/demo/index.vue
index 16faedc8f..2fe00b579 100644
--- a/src/goods-action/demo/index.vue
+++ b/src/goods-action/demo/index.vue
@@ -14,7 +14,7 @@
       <van-goods-action>
         <van-goods-action-icon icon="chat-o" :text="$t('icon1')" />
         <van-goods-action-icon icon="cart-o" info="5" :text="$t('icon2')" />
-        <van-goods-action-icon icon="shop-o" :text="$t('icon3')" />
+        <van-goods-action-icon icon="shop-o" info="12" :text="$t('icon3')" />
         <van-goods-action-button type="warning" :text="$t('button1')" />
         <van-goods-action-button type="danger" :text="$t('button2')" />
       </van-goods-action>
@@ -42,7 +42,7 @@ export default {
       icon3: '店铺',
       button1: '加入购物车',
       button2: '立即购买',
-      title2: '图标提示',
+      title2: '徽标提示',
       customButtonColor: '自定义按钮颜色'
     },
     'en-US': {
diff --git a/src/goods-action/test/__snapshots__/demo.spec.js.snap b/src/goods-action/test/__snapshots__/demo.spec.js.snap
index 92b7adf09..7e1ee1706 100644
--- a/src/goods-action/test/__snapshots__/demo.spec.js.snap
+++ b/src/goods-action/test/__snapshots__/demo.spec.js.snap
@@ -30,7 +30,7 @@ exports[`renders demo correctly 1`] = `
       </div>
       <div role="button" tabindex="0" class="van-goods-action-icon">
         <div class="van-icon van-icon-shop-o van-goods-action-icon__icon">
-          <!---->
+          <div class="van-info">12</div>
         </div>店铺
       </div> <button class="van-button van-button--warning van-button--large van-button--square van-goods-action-button van-goods-action-button--first van-goods-action-button--warning"><span class="van-button__text">加入购物车</span></button> <button class="van-button van-button--danger van-button--large van-button--square van-goods-action-button van-goods-action-button--last van-goods-action-button--danger"><span class="van-button__text">立即购买</span></button>
     </div>
diff --git a/src/number-keyboard/README.md b/src/number-keyboard/README.md
index afdf84c0c..c0443d62d 100644
--- a/src/number-keyboard/README.md
+++ b/src/number-keyboard/README.md
@@ -108,7 +108,7 @@ export default {
 | delete-button-text | Delete button text | *string* | `delete` | - |
 | show-delete-key | Whether to show delete button | *boolean* | `true` | - |
 | hide-on-click-outside | Whether to hide keyboard when click outside | *boolean* | `true` | - |
-| safe-area-inset-bottom | Whether to enable bottom safe area adaptation, to enable those features use `viewport-fit=cover` in the `viewport` meta tag | *boolean* | `false` | - |
+| safe-area-inset-bottom | Whether to enable bottom safe area adaptation | *boolean* | `false` | - |
 
 ### Events
 
diff --git a/src/number-keyboard/README.zh-CN.md b/src/number-keyboard/README.zh-CN.md
index 8afb0904f..7c8382103 100644
--- a/src/number-keyboard/README.zh-CN.md
+++ b/src/number-keyboard/README.zh-CN.md
@@ -114,7 +114,7 @@ export default {
 | delete-button-text | 删除按钮文字 | *string* | `删除` | - |
 | show-delete-key | 是否展示删除按钮 | *boolean* | `true` | - |
 | hide-on-click-outside | 点击外部时是否收起键盘 | *boolean* | `true` | - |
-| safe-area-inset-bottom | 是否开启 iPhone X 底部安全区适配，需要在 `viewport` meta 标签中设置 `viewport-fit=cover` | *boolean* | `false` | - |
+| safe-area-inset-bottom | 是否开启底部安全区适配，[详细说明](#/zh-CN/quickstart#di-bu-an-quan-qu-gua-pei) | *boolean* | `false` | - |
 
 ### Events
 
diff --git a/src/number-keyboard/demo/index.vue b/src/number-keyboard/demo/index.vue
index e61700961..51e8dac5c 100644
--- a/src/number-keyboard/demo/index.vue
+++ b/src/number-keyboard/demo/index.vue
@@ -1,31 +1,13 @@
 <template>
   <demo-section>
-    <demo-block :title="$t('default')">
-      <van-button
-        type="primary"
-        @touchstart.stop="keyboard = 'default'"
-      >
-        {{ $t('button1') }}
-      </van-button>
-
       <van-number-keyboard
         :show="keyboard === 'default'"
         :close-button-text="$t('close')"
         extra-key="."
-        safe-area-inset-bottom
         @blur="keyboard = ''"
         @input="onInput"
         @delete="onDelete"
       />
-    </demo-block>
-
-    <demo-block :title="$t('custom')">
-      <van-button
-        type="info"
-        @touchstart.stop="keyboard = 'custom'"
-      >
-        {{ $t('button2') }}
-      </van-button>
 
       <van-number-keyboard
         :show="keyboard === 'custom'"
@@ -37,25 +19,6 @@
         @input="onInput"
         @delete="onDelete"
       />
-    </demo-block>
-
-    <demo-block :title="$t('bindValue')">
-      <van-field
-        readonly
-        clickable
-        :value="value"
-        :placeholder="$t('clickToInput')"
-        @touchstart.native.stop="keyboard = 'bindValue'"
-      />
-
-      <van-number-keyboard
-        v-model="value"
-        :show="keyboard === 'bindValue'"
-        maxlength="6"
-        safe-area-inset-bottom
-        @blur="keyboard = ''"
-      />
-    </demo-block>
   </demo-section>
 </template>
 
diff --git a/src/number-keyboard/test/__snapshots__/demo.spec.js.snap b/src/number-keyboard/test/__snapshots__/demo.spec.js.snap
index 0588e6866..49e29c55b 100644
--- a/src/number-keyboard/test/__snapshots__/demo.spec.js.snap
+++ b/src/number-keyboard/test/__snapshots__/demo.spec.js.snap
@@ -2,31 +2,13 @@
 
 exports[`renders demo correctly 1`] = `
 <div>
-  <div><button class="van-button van-button--primary van-button--normal"><span class="van-button__text">
-      弹出默认键盘
-    </span></button>
-    <div class="van-number-keyboard van-number-keyboard--default van-number-keyboard--safe-area-inset-bottom" style="z-index: 100;" name="van-slide-up">
-      <div class="van-number-keyboard__title van-hairline--top"><span role="button" tabindex="0" class="van-number-keyboard__close">完成</span></div>
-      <div class="van-number-keyboard__body"><i role="button" tabindex="0" class="van-hairline van-key">1</i><i role="button" tabindex="0" class="van-hairline van-key">2</i><i role="button" tabindex="0" class="van-hairline van-key">3</i><i role="button" tabindex="0" class="van-hairline van-key">4</i><i role="button" tabindex="0" class="van-hairline van-key">5</i><i role="button" tabindex="0" class="van-hairline van-key">6</i><i role="button" tabindex="0" class="van-hairline van-key">7</i><i role="button" tabindex="0" class="van-hairline van-key">8</i><i role="button" tabindex="0" class="van-hairline van-key">9</i><i role="button" tabindex="0" class="van-hairline van-key van-key--gray">.</i><i role="button" tabindex="0" class="van-hairline van-key">0</i><i role="button" tabindex="0" class="van-hairline van-key van-key--gray van-key--delete">删除</i></div>
-    </div>
+  <div class="van-number-keyboard van-number-keyboard--default" style="z-index: 100;" name="van-slide-up">
+    <div class="van-number-keyboard__title van-hairline--top"><span role="button" tabindex="0" class="van-number-keyboard__close">完成</span></div>
+    <div class="van-number-keyboard__body"><i role="button" tabindex="0" class="van-hairline van-key">1</i><i role="button" tabindex="0" class="van-hairline van-key">2</i><i role="button" tabindex="0" class="van-hairline van-key">3</i><i role="button" tabindex="0" class="van-hairline van-key">4</i><i role="button" tabindex="0" class="van-hairline van-key">5</i><i role="button" tabindex="0" class="van-hairline van-key">6</i><i role="button" tabindex="0" class="van-hairline van-key">7</i><i role="button" tabindex="0" class="van-hairline van-key">8</i><i role="button" tabindex="0" class="van-hairline van-key">9</i><i role="button" tabindex="0" class="van-hairline van-key van-key--gray">.</i><i role="button" tabindex="0" class="van-hairline van-key">0</i><i role="button" tabindex="0" class="van-hairline van-key van-key--gray van-key--delete">删除</i></div>
   </div>
-  <div><button class="van-button van-button--info van-button--normal"><span class="van-button__text">
-      弹出自定义键盘
-    </span></button>
-    <div class="van-number-keyboard van-number-keyboard--custom van-number-keyboard--safe-area-inset-bottom" style="z-index: 100; display: none;" name="van-slide-up">
-      <div class="van-number-keyboard__body"><i role="button" tabindex="0" class="van-hairline van-key">1</i><i role="button" tabindex="0" class="van-hairline van-key">2</i><i role="button" tabindex="0" class="van-hairline van-key">3</i><i role="button" tabindex="0" class="van-hairline van-key">4</i><i role="button" tabindex="0" class="van-hairline van-key">5</i><i role="button" tabindex="0" class="van-hairline van-key">6</i><i role="button" tabindex="0" class="van-hairline van-key">7</i><i role="button" tabindex="0" class="van-hairline van-key">8</i><i role="button" tabindex="0" class="van-hairline van-key">9</i><i role="button" tabindex="0" class="van-hairline van-key van-key--middle">0</i><i role="button" tabindex="0" class="van-hairline van-key">.</i>
-        <div class="van-number-keyboard__sidebar"><i role="button" tabindex="0" class="van-hairline van-key van-key--delete van-key--big van-key--gray van-key--delete">删除</i><i role="button" tabindex="0" class="van-hairline van-key van-key--blue van-key--big van-key--close">完成</i></div>
-      </div>
-    </div>
-  </div>
-  <div>
-    <div class="van-cell van-cell--clickable van-field">
-      <div class="van-cell__value van-cell__value--alone">
-        <div class="van-field__body"><input type="text" placeholder="点此输入" readonly="readonly" class="van-field__control"></div>
-      </div>
-    </div>
-    <div class="van-number-keyboard van-number-keyboard--default van-number-keyboard--safe-area-inset-bottom" style="z-index: 100; display: none;" name="van-slide-up">
-      <div class="van-number-keyboard__body"><i role="button" tabindex="0" class="van-hairline van-key">1</i><i role="button" tabindex="0" class="van-hairline van-key">2</i><i role="button" tabindex="0" class="van-hairline van-key">3</i><i role="button" tabindex="0" class="van-hairline van-key">4</i><i role="button" tabindex="0" class="van-hairline van-key">5</i><i role="button" tabindex="0" class="van-hairline van-key">6</i><i role="button" tabindex="0" class="van-hairline van-key">7</i><i role="button" tabindex="0" class="van-hairline van-key">8</i><i role="button" tabindex="0" class="van-hairline van-key">9</i><i role="button" tabindex="0" class="van-hairline van-key van-key--gray"></i><i role="button" tabindex="0" class="van-hairline van-key">0</i><i role="button" tabindex="0" class="van-hairline van-key van-key--gray van-key--delete">删除</i></div>
+  <div class="van-number-keyboard van-number-keyboard--custom van-number-keyboard--safe-area-inset-bottom" style="z-index: 100; display: none;" name="van-slide-up">
+    <div class="van-number-keyboard__body"><i role="button" tabindex="0" class="van-hairline van-key">1</i><i role="button" tabindex="0" class="van-hairline van-key">2</i><i role="button" tabindex="0" class="van-hairline van-key">3</i><i role="button" tabindex="0" class="van-hairline van-key">4</i><i role="button" tabindex="0" class="van-hairline van-key">5</i><i role="button" tabindex="0" class="van-hairline van-key">6</i><i role="button" tabindex="0" class="van-hairline van-key">7</i><i role="button" tabindex="0" class="van-hairline van-key">8</i><i role="button" tabindex="0" class="van-hairline van-key">9</i><i role="button" tabindex="0" class="van-hairline van-key van-key--middle">0</i><i role="button" tabindex="0" class="van-hairline van-key">.</i>
+      <div class="van-number-keyboard__sidebar"><i role="button" tabindex="0" class="van-hairline van-key van-key--delete van-key--big van-key--gray van-key--delete">删除</i><i role="button" tabindex="0" class="van-hairline van-key van-key--blue van-key--big van-key--close">完成</i></div>
     </div>
   </div>
 </div>
diff --git a/src/search/README.md b/src/search/README.md
index f0f9240a3..b68793134 100644
--- a/src/search/README.md
+++ b/src/search/README.md
@@ -27,11 +27,7 @@ export default {
 
 ### Listen to Events
 
-`search` event will be triggered when click the search button on the keyboard.
-
-`cancel` event will be triggered when click the cancel button.
-
-Tips: There will be a search button on the keyboard when Search is inside a form in iOS.
+`search` event will be triggered when click the search button on the keyboard, `cancel` event will be triggered when click the cancel button.
 
 ```html
 <form action="/">
@@ -45,6 +41,8 @@ Tips: There will be a search button on the keyboard when Search is inside a form
 </form>
 ```
 
+> Tips: There will be a search button on the keyboard when Search is inside a form in iOS.
+
 ### Custom Button
 
 Use `action` slot to custom right button, `cancel` event will no longer be triggered when use this slot
diff --git a/src/search/README.zh-CN.md b/src/search/README.zh-CN.md
index 3f91b79b6..c1a7894b6 100644
--- a/src/search/README.zh-CN.md
+++ b/src/search/README.zh-CN.md
@@ -13,7 +13,7 @@ Vue.use(Search);
 
 ### 基础用法
 
-`van-search` 中，v-model 用于控制搜索框中的文字。background 可以自定义搜索框外部背景色。
+v-model 用于控制搜索框中的文字。background 可以自定义搜索框外部背景色。
 
 ```html
 <van-search placeholder="请输入搜索关键词" v-model="value" />
@@ -21,9 +21,7 @@ Vue.use(Search);
 
 ### 事件监听
 
-`van-search` 提供了 search 和 cancel 事件。search 事件在用户点击键盘上的 搜索/回车 按钮触发。cancel 事件在用户点击搜索框右侧取消按钮时触发
-
-Tips: 在 `van-search` 外层增加 form 标签，并且 action 不为空，即可在 IOS 弹出的输入法中显示搜索按钮
+Search 组件提供了`search`和`cancel`事件，`search`事件在点击键盘上的搜索/回车按钮后触发，`cancel`事件在点击搜索框右侧取消按钮时触发
 
 ```html
 <form action="/">
@@ -37,6 +35,8 @@ Tips: 在 `van-search` 外层增加 form 标签，并且 action 不为空，即
 </form>
 ```
 
+> Tips: 在 van-search 外层增加 form 标签，且 action 不为空，即可在 iOS 输入法中显示搜索按钮
+
 ### 自定义按钮
 
 `van-search` 支持自定义右侧取消按钮，使用名字为 action 的插槽即可。使用此插槽以后，原有的 cancel 事件不再生效。
diff --git a/src/submit-bar/README.md b/src/submit-bar/README.md
index 0a77319d0..677ac7eab 100644
--- a/src/submit-bar/README.md
+++ b/src/submit-bar/README.md
@@ -83,7 +83,7 @@ Use slot to add custom contents.
 | loading | Whether to show loading icon | *boolean* | `false` | - |
 | currency | Currency symbol | *string* | `¥` | - |
 | decimal-length | number of digits to appear after the decimal point | *number* | `2` | - |
-| safe-area-inset-bottom | Whether to enable bottom safe area adaptation, to enable those features use `viewport-fit=cover` in the `viewport` meta tag | *boolean* | `false` | - |
+| safe-area-inset-bottom | Whether to enable bottom safe area adaptation | *boolean* | `false` | - |
 
 ### Events
 
diff --git a/src/submit-bar/README.zh-CN.md b/src/submit-bar/README.zh-CN.md
index 0ea900833..2852592d0 100644
--- a/src/submit-bar/README.zh-CN.md
+++ b/src/submit-bar/README.zh-CN.md
@@ -83,7 +83,7 @@ Vue.use(SubmitBar);
 | loading | 是否显示加载中的按钮 |  *boolean* | `false` | - |
 | currency | 货币符号 | *string* | `¥` | - |
 | decimal-length | 价格小数点后位数 | *number* | `2` | - | 
-| safe-area-inset-bottom | 是否开启 iPhone X 底部安全区适配，需要在 `viewport` meta 标签中设置 `viewport-fit=cover` | *boolean* | `false` | - |
+| safe-area-inset-bottom | 是否开启底部安全区适配，[详细说明](#/zh-CN/quickstart#di-bu-an-quan-qu-gua-pei) | *boolean* | `false` | - |
 
 ### Events
 
diff --git a/src/tabbar/README.md b/src/tabbar/README.md
index fe211920b..0375bfcfb 100644
--- a/src/tabbar/README.md
+++ b/src/tabbar/README.md
@@ -148,7 +148,7 @@ export default {
 | active-color | Color of active tab item | *string* | `#1989fa` | - |
 | inactive-color | Color of inactive tab item | *string* | `#7d7e80` | - |
 | route | Whether to enable route mode | *boolean* | `false` | - |
-| safe-area-inset-bottom | Whether to enable bottom safe area adaptation, to enable those features use `viewport-fit=cover` in the `viewport` meta tag | *boolean* | `false` | - |
+| safe-area-inset-bottom | Whether to enable bottom safe area adaptation | *boolean* | `false` | - |
 
 ### Tabbar Events
 
diff --git a/src/tabbar/README.zh-CN.md b/src/tabbar/README.zh-CN.md
index 3f8c8e404..e60eb8a20 100644
--- a/src/tabbar/README.zh-CN.md
+++ b/src/tabbar/README.zh-CN.md
@@ -154,7 +154,7 @@ export default {
 | active-color | 选中标签的颜色 | *string* | `#1989fa` | - |
 | inactive-color | 未选中标签的颜色 | *string* | `#7d7e80` | - |
 | route | 是否开启路由模式 | *boolean* | `false` | - |
-| safe-area-inset-bottom | 是否开启 iPhone X 底部安全区适配，需要在 `viewport` meta 标签中设置 `viewport-fit=cover` | *boolean* | `false` | - |
+| safe-area-inset-bottom | 是否开启底部安全区适配，[详细说明](#/zh-CN/quickstart#di-bu-an-quan-qu-gua-pei) | *boolean* | `false` | - |
 
 ### Tabbar Events
 
diff --git a/yarn.lock b/yarn.lock
index 556132e86..a25a40055 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1285,10 +1285,10 @@
     shelljs "^0.8.2"
     signale "^1.4.0"
 
-"@vant/doc@^2.5.6":
-  version "2.5.6"
-  resolved "https://registry.yarnpkg.com/@vant/doc/-/doc-2.5.6.tgz#789dc09dab86fd7a0e713aba17eafd8dfbde59f6"
-  integrity sha512-qSX3D+zvDljYoaBD3co7sH+aqO3AgHTtU4WOY5TUqFlapjG+3kw/N8icXDyF9jnRp6Q5WCZaedmhZvAEykL3cQ==
+"@vant/doc@^2.5.7":
+  version "2.5.7"
+  resolved "https://registry.yarnpkg.com/@vant/doc/-/doc-2.5.7.tgz#67ae6bedcdb7caccb73ff43d0d13b626e9d4d622"
+  integrity sha512-1n0/YEFB0QvnNKzzjJAzZIJIInyn3y3UFFr31K3pjb17qdPUPuhg42wEXyFWSLQrOHc9jcUtmcEihD3aQIeL/Q==
 
 "@vant/eslint-config@^1.2.5":
   version "1.2.5"