diff --git a/packages/collapse-item/index.ts b/packages/collapse-item/index.ts
index 2fb500ec..5cc68340 100644
--- a/packages/collapse-item/index.ts
+++ b/packages/collapse-item/index.ts
@@ -8,6 +8,7 @@ VantComponent({
   relation: useParent('collapse'),
 
   props: {
+    size: String,
     name: null,
     title: null,
     value: null,
diff --git a/packages/collapse-item/index.wxml b/packages/collapse-item/index.wxml
index ae4cc831..f11d0d43 100644
--- a/packages/collapse-item/index.wxml
+++ b/packages/collapse-item/index.wxml
@@ -2,6 +2,7 @@
 
 <view class="van-collapse-item custom-class {{ index !== 0 ? 'van-hairline--top' : '' }}">
   <van-cell
+    size="{{ size }}"
     title="{{ title }}"
     title-class="title-class"
     icon="{{ icon }}"
diff --git a/packages/collapse/README.md b/packages/collapse/README.md
index cb69ca10..3464cb45 100644
--- a/packages/collapse/README.md
+++ b/packages/collapse/README.md
@@ -172,6 +172,7 @@ Page({
 | --- | --- | --- | --- |
 | name | 唯一标识符，默认为索引值 | _string \| number_ | `index` |
 | title | 标题栏左侧内容 | _string \| number_ | - |
+| size | 标题栏大小，可选值为`large` | _string_ | - |
 | icon | 标题栏左侧图标名称或图片链接，可选值见 [Icon 组件](#/icon) | _string_ | - |
 | value | 标题栏右侧内容 | _string \| number_ | - |
 | label | 标题栏描述信息 | _string_ | - |