diff --git a/docs/components/alert.md b/docs/components/alert.md
index 66df80b..1e09d3f 100644
--- a/docs/components/alert.md
+++ b/docs/components/alert.md
@@ -7,12 +7,19 @@
 <LivePlayground :code="`
 () => {
   return (
-    <Space direction='vertical' size={8}>
+    <div className='flex flex-col gap-2'>
       <Alert type='info' message='提示信息' description='这是一条信息提示。' />
       <Alert type='success' message='操作成功' closable />
       <Alert type='warning' message='警告信息' showIcon />
-      <Alert type='error' message='错误信息' description='请检查后重试。' closable />
-    </Space>
+      <Alert
+        type='error'
+        message='错误信息'
+        description='请检查后重试。'
+        closable
+        closeIcon='关闭'
+        closeAriaLabel='关闭错误提示'
+      />
+    </div>
   )
 }
 `" />
@@ -21,6 +28,8 @@
 
 Alert 使用 `role='alert'` 暴露重要提示内容。默认状态图标仅作视觉辅助，会从辅助技术树中隐藏；需要传达给读屏用户的信息应放在 `message` 或 `description` 中。传入自定义 `icon` 时，组件不会自动隐藏它。
 
+可关闭 Alert 的默认关闭按钮使用 `aria-label='Close alert'`。当使用文字、图标或本地化关闭控件时，可以通过 `closeIcon` 和 `closeAriaLabel` 保持视觉内容与可访问名称一致。
+
 ## API
 
 | 属性 | 说明 | 类型 | 默认值 |
@@ -33,4 +42,6 @@ Alert 使用 `role='alert'` 暴露重要提示内容。默认状态图标仅作
 | icon | 自定义图标 | `ReactNode` | - |
 | banner | 横幅模式 | `boolean` | `false` |
 | action | 操作区域 | `ReactNode` | - |
-| onClose | 关闭回调 | `() => void` | - |
+| closeIcon | 自定义关闭控件内容 | `ReactNode` | `'✕'` |
+| closeAriaLabel | 关闭按钮的可访问名称 | `string` | `'Close alert'` |
+| onClose | 关闭回调 | `(event: MouseEvent<HTMLButtonElement>) => void` | - |
diff --git a/packages/ui/src/components/feedback/Alert/Alert.test.tsx b/packages/ui/src/components/feedback/Alert/Alert.test.tsx
index 0c05231..0bda550 100644
--- a/packages/ui/src/components/feedback/Alert/Alert.test.tsx
+++ b/packages/ui/src/components/feedback/Alert/Alert.test.tsx
@@ -34,12 +34,27 @@ describe('Alert', () => {
     await user.click(screen.getByRole('button', { name: 'Close alert' }))
 
     expect(onClose).toHaveBeenCalledTimes(1)
+    expect(onClose.mock.calls[0]?.[0]).toHaveProperty('type', 'click')
     expect(screen.queryByRole('alert')).not.toBeInTheDocument()
   })
 
+  it('supports custom close icon and accessible name', () => {
+    render(
+      <Alert
+        closable
+        message="Dismiss me"
+        closeIcon={<span>Dismiss</span>}
+        closeAriaLabel="Dismiss alert"
+      />,
+    )
+
+    const closeButton = screen.getByRole('button', { name: 'Dismiss alert' })
+    expect(closeButton).toHaveTextContent('Dismiss')
+  })
+
   it('renders an optional action area', () => {
     render(<Alert message="Update available" action={<button type="button">Review</button>} />)
 
     expect(screen.getByRole('button', { name: 'Review' })).toBeInTheDocument()
   })
-})
+})
\ No newline at end of file
diff --git a/packages/ui/src/components/feedback/Alert/Alert.tsx b/packages/ui/src/components/feedback/Alert/Alert.tsx
index fbbd41c..53b6389 100644
--- a/packages/ui/src/components/feedback/Alert/Alert.tsx
+++ b/packages/ui/src/components/feedback/Alert/Alert.tsx
@@ -1,4 +1,4 @@
-import { forwardRef, useState, type HTMLAttributes, type ReactNode } from 'react'
+import { forwardRef, useState, type HTMLAttributes, type MouseEvent, type ReactNode } from 'react'
 
 import { cn } from '../../../utils/cn'
 import { alertTypeSurfaceClass, type AlertType } from '../../../theme/componentTokens'
@@ -10,9 +10,11 @@ export interface AlertProps extends HTMLAttributes<HTMLDivElement> {
   closable?: boolean
   showIcon?: boolean
   icon?: ReactNode
-  onClose?: () => void
+  onClose?: (event: MouseEvent<HTMLButtonElement>) => void
   banner?: boolean
   action?: ReactNode
+  closeIcon?: ReactNode
+  closeAriaLabel?: string
 }
 
 const typeIconMap: Record<AlertType, string> = {
@@ -34,6 +36,8 @@ export const Alert = forwardRef<HTMLDivElement, AlertProps>(function Alert(
     onClose,
     banner = false,
     action,
+    closeIcon = '✕',
+    closeAriaLabel = 'Close alert',
     ...props
   },
   ref,
@@ -67,16 +71,16 @@ export const Alert = forwardRef<HTMLDivElement, AlertProps>(function Alert(
       {closable ? (
         <button
           type="button"
-          onClick={() => {
+          onClick={(event) => {
             setVisible(false)
-            onClose?.()
+            onClose?.(event)
           }}
-          className="shrink-0 rounded px-1 opacity-60 hover:opacity-100"
-          aria-label="Close alert"
+          className="shrink-0 rounded px-1 opacity-60 hover:opacity-100 focus-visible:outline focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-current"
+          aria-label={closeAriaLabel}
         >
-          ✕
+          {closeIcon}
         </button>
       ) : null}
     </div>
   )
-})
+})
\ No newline at end of file