diff --git a/frontend/src/app/layout/app-header.test.tsx b/frontend/src/app/layout/app-header.test.tsx
index 5cbf91e5..ebcafaec 100644
--- a/frontend/src/app/layout/app-header.test.tsx
+++ b/frontend/src/app/layout/app-header.test.tsx
@@ -6,6 +6,7 @@ import { MemoryRouter, Route, Routes, useLocation } from 'react-router'
 import type { AuthTokens, CreditAccount, QuotaApis, UserApis } from '@/entities'
 import { forgetActiveRun, rememberActiveRun } from '@/features/active-run'
 import { AuthSessionProvider } from '@/features/auth-session'
+import defaultAccountAvatar from '@/assets/account/avatars/windup-witch-avatar.webp'
 import { AppHeader } from './app-header'
 
 const user = {
@@ -484,6 +485,9 @@ describe('AppHeader', () => {
     expect(
       within(accountMenu).getByTestId('default-account-avatar').getAttribute('aria-hidden'),
     ).toBe('true')
+    expect(within(accountMenu).getByTestId('default-account-avatar').getAttribute('src')).toBe(
+      defaultAccountAvatar,
+    )
   })
 
   it('账号菜单在点击外部或按 Escape 时关闭', async () => {
diff --git a/frontend/src/app/layout/app-header.tsx b/frontend/src/app/layout/app-header.tsx
index 0e178c56..03b4f856 100644
--- a/frontend/src/app/layout/app-header.tsx
+++ b/frontend/src/app/layout/app-header.tsx
@@ -2,6 +2,7 @@ import { WindupMark } from '@/shared/ui/windup-mark'
 import { useEffect, useRef, useState } from 'react'
 import { Link, useLocation, useNavigate } from 'react-router'
 
+import defaultAccountAvatar from '@/assets/account/avatars/windup-witch-avatar.webp'
 import { quotaApis as defaultQuotaApis } from '@/entities'
 import type { QuotaApis } from '@/entities'
 import { readActiveRun, subscribeActiveRun } from '@/features/active-run'
@@ -432,11 +433,13 @@ export function AppHeader({
                     accountMenu.expanded ? 'scale-110' : 'scale-100'
                   }`}
                 >
-                  <WindupMark
+                  <img
                     data-testid="default-account-avatar"
-
+                    src={defaultAccountAvatar}
+                    alt=""
                     aria-hidden="true"
                     className="h-5 w-5 object-contain"
+                    style={{ imageRendering: 'pixelated' }}
                   />
                 </span>
                 <span className="hidden truncate sm:inline">
diff --git a/frontend/src/assets/account/avatars/windup-witch-avatar.webp b/frontend/src/assets/account/avatars/windup-witch-avatar.webp
new file mode 100644
index 00000000..175ab18a
Binary files /dev/null and b/frontend/src/assets/account/avatars/windup-witch-avatar.webp differ
diff --git a/frontend/src/pages/account/index.test.tsx b/frontend/src/pages/account/index.test.tsx
index 995d4109..ec03e266 100644
--- a/frontend/src/pages/account/index.test.tsx
+++ b/frontend/src/pages/account/index.test.tsx
@@ -7,6 +7,7 @@ import { quotaApis } from '@/entities'
 import type { AuthTokens, User, UserApis } from '@/entities'
 import { AuthSessionProvider } from '@/features/auth-session'
 import { AppRoutes } from '@/app/app'
+import defaultAccountAvatar from '@/assets/account/avatars/windup-witch-avatar.webp'
 
 const user: User = {
   id: '7',
@@ -140,6 +141,9 @@ describe('AccountPage', () => {
     expect(screen.getByTestId('account-profile-default-avatar').getAttribute('aria-hidden')).toBe(
       'true',
     )
+    expect(screen.getByTestId('account-profile-default-avatar').getAttribute('src')).toBe(
+      defaultAccountAvatar,
+    )
     expect(screen.queryByLabelText('邮箱验证码')).toBeNull()
 
     fireEvent.click(screen.getByRole('button', { name: '修改密码' }))
diff --git a/frontend/src/pages/account/index.tsx b/frontend/src/pages/account/index.tsx
index 1a50baff..18fa63cc 100644
--- a/frontend/src/pages/account/index.tsx
+++ b/frontend/src/pages/account/index.tsx
@@ -1,4 +1,3 @@
-import { WindupMark } from '@/shared/ui/windup-mark'
 import { Gift, X } from '@phosphor-icons/react'
 import {
   useEffect,
@@ -13,6 +12,7 @@ import {
 import { useSearchParams } from 'react-router'
 
 import accountBadgeArtwork from '@/assets/account/illustrations/account-badge.webp'
+import defaultAccountAvatar from '@/assets/account/avatars/windup-witch-avatar.webp'
 import { quotaApis, type CreditRedemptionResult, type User } from '@/entities'
 import { useAuthSession } from '@/features/auth-session'
 import {
@@ -735,11 +735,13 @@ export function AccountPage() {
 
                 <div className="mt-5 flex items-center gap-4 border-b border-app-line pb-5">
                   <span className="grid size-14 shrink-0 place-items-center rounded-full bg-app-accent-soft">
-                    <WindupMark
+                    <img
                       data-testid="account-profile-default-avatar"
-
+                      src={defaultAccountAvatar}
+                      alt=""
                       aria-hidden="true"
                       className="size-9 object-contain"
+                      style={{ imageRendering: 'pixelated' }}
                     />
                   </span>
                   <div className="min-w-0">