diff --git a/web/app/components/plugins/base/__tests__/key-value-item.spec.tsx b/web/app/components/plugins/base/__tests__/key-value-item.spec.tsx
index 8575eabf626..e238bcde0b4 100644
--- a/web/app/components/plugins/base/__tests__/key-value-item.spec.tsx
+++ b/web/app/components/plugins/base/__tests__/key-value-item.spec.tsx
@@ -1,4 +1,5 @@
-import { cleanup, fireEvent, render, screen } from '@testing-library/react'
+import { cleanup, render, screen, within } from '@testing-library/react'
+import userEvent from '@testing-library/user-event'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import KeyValueItem from '../key-value-item'
 
@@ -34,9 +35,20 @@ describe('KeyValueItem', () => {
     expect(screen.queryByText('sk-secret')).not.toBeInTheDocument()
   })
 
-  it('copies actual value (not masked) when copy button is clicked', () => {
+  it('associates the label with the copy action and announces the result', async () => {
+    vi.useRealTimers()
+    const user = userEvent.setup()
     render(<KeyValueItem label="Key" value="sk-secret" maskedValue="sk-***" />)
-    fireEvent.click(screen.getByRole('button', { name: 'common.operation.copy' }))
+
+    const keyGroup = screen.getByRole('group', { name: 'Key' })
+    const copyButton = within(keyGroup).getByRole('button', {
+      name: 'common.operation.copy: Key',
+    })
+
+    await user.click(copyButton)
+
     expect(mockCopy).toHaveBeenCalledWith('sk-secret')
+    expect(copyButton).toHaveAccessibleName('common.operation.copy: Key')
+    expect(within(keyGroup).getByRole('status')).toHaveTextContent('common.operation.copied: Key')
   })
 })
diff --git a/web/app/components/plugins/base/key-value-item.tsx b/web/app/components/plugins/base/key-value-item.tsx
index 9e288e5e821..eae60f88c77 100644
--- a/web/app/components/plugins/base/key-value-item.tsx
+++ b/web/app/components/plugins/base/key-value-item.tsx
@@ -3,7 +3,7 @@ import { Button } from '@langgenius/dify-ui/button'
 import { cn } from '@langgenius/dify-ui/cn'
 import { Tooltip, TooltipContent, TooltipTrigger } from '@langgenius/dify-ui/tooltip'
 import copy from 'copy-to-clipboard'
-import { useCallback, useEffect, useState } from 'react'
+import { useCallback, useEffect, useId, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import { CopyCheck } from '../../base/icons/src/vender/line/files'
 
@@ -24,6 +24,7 @@ function KeyValueItem({
 }: Props) {
   const { t } = useTranslation()
   const [isCopied, setIsCopied] = useState(false)
+  const labelId = useId()
   const handleCopy = useCallback(() => {
     copy(value)
     setIsCopied(true)
@@ -40,11 +41,16 @@ function KeyValueItem({
     }
   }, [isCopied])
 
-  const copyLabel = t(($) => $[`operation.${isCopied ? 'copied' : 'copy'}`], { ns: 'common' })
+  const copiedLabel = t(($) => $['operation.copied'], { ns: 'common' })
+  const copyLabel = t(($) => $['operation.copy'], { ns: 'common' })
+  const copyButtonLabel = `${copyLabel}: ${label}`
+  const copyStatus = `${copiedLabel}: ${label}`
+  const tooltipLabel = isCopied ? copiedLabel : copyLabel
 
   return (
-    <div className="flex items-center gap-1">
+    <div role="group" aria-labelledby={labelId} className="flex items-center gap-1">
       <span
+        id={labelId}
         className={cn(
           'flex flex-col items-start justify-center system-xs-medium text-text-tertiary',
           labelWidthClassName,
@@ -63,7 +69,7 @@ function KeyValueItem({
             render={
               <Button
                 variant="ghost"
-                aria-label={copyLabel}
+                aria-label={copyButtonLabel}
                 className="size-6 p-0"
                 onClick={handleCopy}
               >
@@ -78,9 +84,12 @@ function KeyValueItem({
               </Button>
             }
           />
-          <TooltipContent placement="top">{copyLabel}</TooltipContent>
+          <TooltipContent placement="top">{tooltipLabel}</TooltipContent>
         </Tooltip>
       </div>
+      <span role="status" aria-atomic="true" className="sr-only">
+        {isCopied ? copyStatus : ''}
+      </span>
     </div>
   )
 }