diff --git a/components/collapse/Collapse.tsx b/components/collapse/Collapse.tsx
index 2122af9206..35eb676115 100644
--- a/components/collapse/Collapse.tsx
+++ b/components/collapse/Collapse.tsx
@@ -9,8 +9,8 @@ import animation from '../_util/openAnimation';
 export type ExpandIconPosition = 'left' | 'right';
 
 export interface CollapseProps {
-  activeKey?: Array<string> | string;
-  defaultActiveKey?: Array<string>;
+  activeKey?: Array<string | number> | string | number;
+  defaultActiveKey?: Array<string | number> | string | number;
   /** 手风琴效果 */
   accordion?: boolean;
   destroyInactivePanel?: boolean;
diff --git a/components/collapse/CollapsePanel.tsx b/components/collapse/CollapsePanel.tsx
index 8a8c98f33e..5ba6be107c 100644
--- a/components/collapse/CollapsePanel.tsx
+++ b/components/collapse/CollapsePanel.tsx
@@ -4,7 +4,7 @@ import classNames from 'classnames';
 import { ConfigConsumer, ConfigConsumerProps } from '../config-provider';
 
 export interface CollapsePanelProps {
-  key: string;
+  key: string | number;
   header: React.ReactNode;
   disabled?: boolean;
   className?: string;
diff --git a/components/collapse/index.en-US.md b/components/collapse/index.en-US.md
index a96e6bf7cc..09667c023e 100644
--- a/components/collapse/index.en-US.md
+++ b/components/collapse/index.en-US.md
@@ -18,8 +18,8 @@ A content area which can be collapsed and expanded.
 
 | Property | Description | Type | Default | Version |
 | --- | --- | --- | --- | --- |
-| activeKey | Key of the active panel | string\[]\|string | No default value. In `accordion` mode, it's the key of the first panel. |  |
-| defaultActiveKey | Key of the initial active panel | string | - |  |
+| activeKey | Key of the active panel | string\[]\|string\| number\[]\|number | No default value. In `accordion` mode, it's the key of the first panel. |  |
+| defaultActiveKey | Key of the initial active panel | string\[]\|string\| number\[]\|number | - |  |
 | bordered | Toggles rendering of the border around the collapse block | boolean | `true` | 3.6.5 |
 | accordion | If `true`, `Collapse` renders as `Accordion` | boolean | `false` | 3.6.5 |
 | onChange | Callback function executed when active panel is changed | Function | - |  |
@@ -34,6 +34,6 @@ A content area which can be collapsed and expanded.
 | disabled | If `true`, panel cannot be opened or closed | boolean | `false` |  |
 | forceRender | Forced render of content on panel, instead of lazy rending after clicking on header | boolean | `false` | 3.2.0 |
 | header | Title of the panel | string\|ReactNode | - |  |
-| key | Unique key identifying the panel from among its siblings | string | - |  |
+| key | Unique key identifying the panel from among its siblings | string\|number | - |  |
 | showArrow | If `false`, panel will not show arrow icon | boolean | `true` | 3.1.0 |
 | extra | extra element in the corner | ReactNode | - | 3.14.0 |
diff --git a/components/collapse/index.zh-CN.md b/components/collapse/index.zh-CN.md
index deb7097d8e..e28aea78ea 100644
--- a/components/collapse/index.zh-CN.md
+++ b/components/collapse/index.zh-CN.md
@@ -19,8 +19,8 @@ cols: 1
 
 | 参数 | 说明 | 类型 | 默认值 | 版本 |
 | --- | --- | --- | --- | --- |
-| activeKey | 当前激活 tab 面板的 key | string\[]\|string | 默认无，accordion 模式下默认第一个元素 |  |
-| defaultActiveKey | 初始化选中面板的 key | string | 无 |  |
+| activeKey | 当前激活 tab 面板的 key | string\[]\|string\| number\[]\|number | 默认无，accordion 模式下默认第一个元素 |  |
+| defaultActiveKey | 初始化选中面板的 key | string\[]\|string\| number\[]\|number | 无 |  |
 | bordered | 带边框风格的折叠面板 | boolean | `true` | 3.13.0 |
 | accordion | 手风琴模式 | boolean | `false` | 3.13.0 |
 | onChange | 切换面板的回调 | Function | 无 |  |
@@ -35,6 +35,6 @@ cols: 1
 | disabled    | 禁用后的面板展开与否将无法通过用户交互改变 | boolean           | false  |        |
 | forceRender | 被隐藏时是否渲染 DOM 结构                  | boolean           | false  | 3.2.0  |
 | header      | 面板头内容                                 | string\|ReactNode | 无     |        |
-| key         | 对应 activeKey                             | string            | 无     |        |
+| key         | 对应 activeKey                             | string\|number            | 无     |        |
 | showArrow   | 是否展示当前面板上的箭头                   | boolean           | `true` | 3.13.0 |
 | extra       | 自定义渲染每个面板右上角的内容             | ReactNode         | -      | 3.14.0 |