diff --git a/apps/backend/src/config/app-config-keys.ts b/apps/backend/src/config/app-config-keys.ts
index dd34f61a..19068944 100644
--- a/apps/backend/src/config/app-config-keys.ts
+++ b/apps/backend/src/config/app-config-keys.ts
@@ -5,6 +5,7 @@ export const APP_CONFIG_KEYS = {
   workerFinance: 'worker_finance',
   workerPlatformNotifications: 'worker_platform_notifications',
   workerProductMatch: 'worker_product_match',
+  workerAnnouncement: 'worker_announcement',
   cloudtentaclesSources: 'cloudtentacles_sources',
   cloudtentaclesSession: 'cloudtentacles_session',
   cloudtentaclesOverrideRules: 'cloudtentacles_override_rules',
diff --git a/apps/backend/src/routes/admin/worker-platform.ts b/apps/backend/src/routes/admin/worker-platform.ts
index 968e2463..3040236f 100644
--- a/apps/backend/src/routes/admin/worker-platform.ts
+++ b/apps/backend/src/routes/admin/worker-platform.ts
@@ -17,6 +17,7 @@ import {
   deleteAdminWorkerLevel,
   getAdminWorkerFinanceConfig,
   getAdminWorkerProductMatchConfig,
+  getAdminWorkerAnnouncementConfig,
   getAdminWorkerPlatformNotificationConfig,
   getAdminWorkerPlatformSummary,
   getAdminWorkOrderEvents,
@@ -46,6 +47,7 @@ import {
   resetAdminWorkerPassword,
   saveAdminWorkerFinanceConfig,
   saveAdminWorkerProductMatchConfig,
+  saveAdminWorkerAnnouncementConfig,
   saveAdminWorkerPlatformNotificationConfig,
   saveAdminWorkerWithdrawalAccount,
   saveAdminWorkCategory,
@@ -249,6 +251,32 @@ router.get(
   }),
 )
 
+router.get(
+  '/worker-platform/announcement',
+  requireAdminRoles(['admin', 'operator']),
+  createJsonHandler(() => getAdminWorkerAnnouncementConfig(), {
+    successMessage: 'ok',
+    errorMessage: '读取公告失败',
+    scope: '[admin/worker-platform/announcement]',
+  }),
+)
+
+router.post(
+  '/worker-platform/announcement',
+  requireAdminRoles(['admin']),
+  createJsonHandler((req) => saveAdminWorkerAnnouncementConfig(req.body || {}), {
+    successMessage: '公告已保存',
+    errorMessage: '保存公告失败',
+    scope: '[admin/worker-platform/announcement]',
+    audit: (_req, data) => ({
+      action: 'worker_announcement_saved',
+      targetType: 'worker_announcement',
+      targetId: 'worker_announcement',
+      data: data && typeof data === 'object' ? (data as Record<string, unknown>) : {},
+    }),
+  }),
+)
+
 router.post(
   '/worker-platform/product-match-config',
   requireAdminRoles(['admin', 'operator']),
diff --git a/apps/backend/src/routes/worker.ts b/apps/backend/src/routes/worker.ts
index c78447e4..23dceac4 100644
--- a/apps/backend/src/routes/worker.ts
+++ b/apps/backend/src/routes/worker.ts
@@ -38,6 +38,7 @@ import {
   supplementWorkerAcceptedOrderEvidence,
   submitWorkerOrderAcceptance,
   getWorkerCancelRequestSummary,
+  getWorkerAnnouncement,
   getWorkerOrderFeedbackSummary,
   submitWorkerCancelRequest,
   submitWorkerOrderFeedback,
@@ -454,6 +455,16 @@ router.get(
   }),
 )
 
+router.get(
+  '/announcement',
+  requireActiveWorker,
+  createRouteHandler((req) => getWorkerAnnouncement(getRequiredWorkerSession(req)), {
+    successMessage: 'ok',
+    errorMessage: '读取公告失败',
+    scope: '[worker/announcement]',
+  }),
+)
+
 router.get(
   '/orders/feedbacks',
   requireActiveWorker,
diff --git a/apps/backend/src/services/worker-platform/admin-service.ts b/apps/backend/src/services/worker-platform/admin-service.ts
index 2a69cea1..f6ec6468 100644
--- a/apps/backend/src/services/worker-platform/admin-service.ts
+++ b/apps/backend/src/services/worker-platform/admin-service.ts
@@ -84,6 +84,10 @@ import {
   getWorkerProductMatchConfig,
   saveWorkerProductMatchConfig,
 } from './worker-product-match-config-service.js'
+import {
+  getWorkerAnnouncementConfig,
+  saveWorkerAnnouncementConfig,
+} from './worker-announcement-config-service.js'
 import { refreshUploadedFileUrls } from '../file-storage/file-storage-service.js'
 import {
   createWorkOrderMaterialAdminNotification,
@@ -1208,6 +1212,14 @@ export async function getAdminWorkerProductMatchConfig() {
   return getWorkerProductMatchConfig()
 }
 
+export async function getAdminWorkerAnnouncementConfig() {
+  return getWorkerAnnouncementConfig()
+}
+
+export async function saveAdminWorkerAnnouncementConfig(payload: JsonObject = {}) {
+  return saveWorkerAnnouncementConfig(payload)
+}
+
 export async function saveAdminWorkerProductMatchConfig(payload: JsonObject = {}) {
   return saveWorkerProductMatchConfig(payload)
 }
diff --git a/apps/backend/src/services/worker-platform/index.ts b/apps/backend/src/services/worker-platform/index.ts
index 0e895e14..fafdfd01 100644
--- a/apps/backend/src/services/worker-platform/index.ts
+++ b/apps/backend/src/services/worker-platform/index.ts
@@ -2,3 +2,4 @@ export * from './mappers.js'
 export * from './worker-service.js'
 export * from './admin-service.js'
 export * from './worker-product-match-config-service.js'
+export * from './worker-announcement-config-service.js'
diff --git a/apps/backend/src/services/worker-platform/worker-announcement-config-service.ts b/apps/backend/src/services/worker-platform/worker-announcement-config-service.ts
new file mode 100644
index 00000000..975cce27
--- /dev/null
+++ b/apps/backend/src/services/worker-platform/worker-announcement-config-service.ts
@@ -0,0 +1,47 @@
+import { APP_CONFIG_KEYS } from '../../config/app-config-keys.js'
+import type { JsonObject } from '../../types/json.js'
+import { readAppConfigEntry, saveAppConfigEntry } from '../config/app-config-store.js'
+
+export type WorkerAnnouncementConfig = {
+  enabled: boolean
+  content: string
+}
+
+export function getWorkerAnnouncementConfig(): WorkerAnnouncementConfig {
+  return readAppConfigEntry({
+    configKey: APP_CONFIG_KEYS.workerAnnouncement,
+    fallback: createDefaultWorkerAnnouncementConfig,
+    normalize: normalizeWorkerAnnouncementConfig,
+  })
+}
+
+export async function saveWorkerAnnouncementConfig(
+  rawValue: unknown,
+): Promise<WorkerAnnouncementConfig> {
+  return saveAppConfigEntry({
+    configKey: APP_CONFIG_KEYS.workerAnnouncement,
+    value: rawValue,
+    normalize: normalizeWorkerAnnouncementConfig,
+  })
+}
+
+export function createDefaultWorkerAnnouncementConfig(): WorkerAnnouncementConfig {
+  return {
+    enabled: true,
+    content: '平台担保交易，拒绝私下转账/共享验证码，交接全程留痕。',
+  }
+}
+
+export function normalizeWorkerAnnouncementConfig(rawValue: unknown): WorkerAnnouncementConfig {
+  const source = isPlainObject(rawValue) ? rawValue : {}
+  return {
+    enabled: source.enabled !== false,
+    content: String(source.content || '')
+      .trim()
+      .slice(0, 300),
+  }
+}
+
+function isPlainObject(value: unknown): value is JsonObject {
+  return Object.prototype.toString.call(value) === '[object Object]'
+}
diff --git a/apps/backend/src/services/worker-platform/worker-service.ts b/apps/backend/src/services/worker-platform/worker-service.ts
index 94f47575..7a77d1eb 100644
--- a/apps/backend/src/services/worker-platform/worker-service.ts
+++ b/apps/backend/src/services/worker-platform/worker-service.ts
@@ -84,6 +84,7 @@ import { addHours, nowIso } from '../../utils/time.js'
 import { normalizePage, normalizePageSize, safeParseJson } from '../admin/admin-query-utils.js'
 import { getSmsProvider } from '../sms/index.js'
 import { getWorkerFinanceConfig } from './worker-finance-config-service.js'
+import { getWorkerAnnouncementConfig } from './worker-announcement-config-service.js'
 import { refreshUploadedFileUrls } from '../file-storage/file-storage-service.js'
 import {
   createWorkerAcceptanceAdminNotification,
@@ -1756,6 +1757,11 @@ export async function getWorkerCancelRequestSummary(session: WorkerSession) {
   return { risk, items: requests.map(mapWorkerCancelRequest) }
 }
 
+export async function getWorkerAnnouncement(session: WorkerSession) {
+  requireActiveWorkerSession(session)
+  return getWorkerAnnouncementConfig()
+}
+
 export async function getWorkerOrderFeedbackSummary(session: WorkerSession) {
   requireActiveWorkerSession(session)
   return { items: (await listWorkerOrderFeedbacks(session.workerId)).map(mapWorkerOrderFeedback) }
diff --git a/apps/frontend/src/components/worker/WorkerAnnouncementBanner.tsx b/apps/frontend/src/components/worker/WorkerAnnouncementBanner.tsx
new file mode 100644
index 00000000..f765681a
--- /dev/null
+++ b/apps/frontend/src/components/worker/WorkerAnnouncementBanner.tsx
@@ -0,0 +1,30 @@
+import { SoundOutlined } from '@ant-design/icons'
+import { useQuery } from '@tanstack/react-query'
+
+import { fetchWorkerAnnouncement } from '@/services/worker'
+
+export default function WorkerAnnouncementBanner() {
+  const announcementQuery = useQuery({
+    queryKey: ['worker-announcement'],
+    queryFn: fetchWorkerAnnouncement,
+    retry: false,
+  })
+  const announcement = announcementQuery.data?.data
+  const content = String(announcement?.content || '').trim()
+
+  if (!announcement?.enabled || !content) return null
+
+  return (
+    <section className="worker-announcement" aria-label="平台公告">
+      <span className="worker-announcement-label">
+        <SoundOutlined /> 公告
+      </span>
+      <div className="worker-announcement-viewport">
+        <div className="worker-announcement-track">
+          <span>{content}</span>
+          <span aria-hidden="true">{content}</span>
+        </div>
+      </div>
+    </section>
+  )
+}
diff --git a/apps/frontend/src/layouts/WorkerLayout.tsx b/apps/frontend/src/layouts/WorkerLayout.tsx
index f54096d0..08b6e6fe 100644
--- a/apps/frontend/src/layouts/WorkerLayout.tsx
+++ b/apps/frontend/src/layouts/WorkerLayout.tsx
@@ -14,6 +14,7 @@ import { useIsMobile } from '@/utils/use-is-mobile'
 import { clearWorkerSession, getWorkerStatus, getWorkerUsername } from '@/utils/worker-auth'
 import { getWorkerToken } from '@/utils/worker-auth'
 import { useRealtimeEvents, type RealtimeEvent } from '@/hooks/useRealtimeEvents'
+import WorkerAnnouncementBanner from '@/components/worker/WorkerAnnouncementBanner'
 
 const menuItems: MenuProps['items'] = [
   { key: '/hall', icon: <ShoppingOutlined />, label: '抢单大厅' },
@@ -89,6 +90,7 @@ export default function WorkerLayout() {
         </header>
 
         <main className="worker-mobile-content">
+          <WorkerAnnouncementBanner />
           <Outlet />
         </main>
 
@@ -146,6 +148,7 @@ export default function WorkerLayout() {
       </Layout.Sider>
       <Layout className="admin-main-shell">
         <Layout.Content className="admin-content">
+          <WorkerAnnouncementBanner />
           <Outlet />
         </Layout.Content>
       </Layout>
diff --git a/apps/frontend/src/pages/admin/AdminWorkerPlatformPage.tsx b/apps/frontend/src/pages/admin/AdminWorkerPlatformPage.tsx
index 27464360..cf892be5 100644
--- a/apps/frontend/src/pages/admin/AdminWorkerPlatformPage.tsx
+++ b/apps/frontend/src/pages/admin/AdminWorkerPlatformPage.tsx
@@ -7,6 +7,7 @@ import PageHeader from '@/components/admin/PageHeader'
 import { fetchAdminWorkerPlatformSummary } from '@/services/admin'
 import { getAdminRole } from '@/utils/admin-auth'
 import CategoriesPanel from './panels/CategoriesPanel'
+import AnnouncementPanel from './panels/AnnouncementPanel'
 import CancelRequestsPanel from './panels/CancelRequestsPanel'
 import FinancePanel from './panels/FinancePanel'
 import FeedbacksPanel from './panels/FeedbacksPanel'
@@ -56,6 +57,9 @@ export default function AdminWorkerPlatformPage() {
                 { key: 'orders', label: '接单工单', children: <WorkOrdersPanel /> },
                 { key: 'cancel-requests', label: '撤单审核', children: <CancelRequestsPanel /> },
                 { key: 'feedbacks', label: '问题反馈', children: <FeedbacksPanel /> },
+                ...(isAdmin
+                  ? [{ key: 'announcement', label: '公告管理', children: <AnnouncementPanel /> }]
+                  : []),
                 { key: 'rules', label: '接单模板', children: <ProductRulesPanel /> },
                 { key: 'product-match', label: '匹配诊断', children: <ProductMatchPanel /> },
                 { key: 'categories', label: '分类', children: <CategoriesPanel /> },
@@ -79,6 +83,7 @@ function loadActiveTabPreference(): string {
   return saved === 'orders' ||
     saved === 'cancel-requests' ||
     saved === 'feedbacks' ||
+    saved === 'announcement' ||
     saved === 'rules' ||
     saved === 'product-match' ||
     saved === 'categories' ||
@@ -99,6 +104,7 @@ function isWorkerPlatformTab(tab: string | null): tab is string {
     'orders',
     'cancel-requests',
     'feedbacks',
+    'announcement',
     'rules',
     'product-match',
     'categories',
diff --git a/apps/frontend/src/pages/admin/panels/AnnouncementPanel.tsx b/apps/frontend/src/pages/admin/panels/AnnouncementPanel.tsx
new file mode 100644
index 00000000..594449c1
--- /dev/null
+++ b/apps/frontend/src/pages/admin/panels/AnnouncementPanel.tsx
@@ -0,0 +1,61 @@
+import { useQuery, useQueryClient } from '@tanstack/react-query'
+import { App, Button, Card, Form, Input, Space, Switch, Typography } from 'antd'
+import { useEffect, useState } from 'react'
+
+import { fetchAdminWorkerAnnouncement, saveAdminWorkerAnnouncement } from '@/services/admin'
+import type { WorkerAnnouncementConfig } from '@/types/worker-platform'
+
+export default function AnnouncementPanel() {
+  const { message } = App.useApp()
+  const queryClient = useQueryClient()
+  const [form] = Form.useForm<WorkerAnnouncementConfig>()
+  const [saving, setSaving] = useState(false)
+  const announcementQuery = useQuery({
+    queryKey: ['admin-worker-announcement'],
+    queryFn: fetchAdminWorkerAnnouncement,
+  })
+
+  useEffect(() => {
+    if (announcementQuery.data?.data) form.setFieldsValue(announcementQuery.data.data)
+  }, [announcementQuery.data, form])
+
+  async function saveAnnouncement(values: WorkerAnnouncementConfig) {
+    setSaving(true)
+    try {
+      await saveAdminWorkerAnnouncement({
+        enabled: values.enabled !== false,
+        content: String(values.content || '').trim(),
+      })
+      await queryClient.invalidateQueries({ queryKey: ['admin-worker-announcement'] })
+      message.success('公告已保存')
+    } catch (error) {
+      message.error(error instanceof Error ? error.message : '保存公告失败')
+    } finally {
+      setSaving(false)
+    }
+  }
+
+  return (
+    <Card title="打手端滚动公告" bordered={false}>
+      <Form form={form} layout="vertical" onFinish={saveAnnouncement} style={{ maxWidth: 760 }}>
+        <Form.Item name="enabled" valuePropName="checked" label="展示公告">
+          <Switch />
+        </Form.Item>
+        <Form.Item
+          name="content"
+          label="公告内容"
+          rules={[{ required: true, whitespace: true, message: '请填写公告内容' }]}
+          extra="公告会显示在打手端各页面顶部并横向滚动。"
+        >
+          <Input.TextArea rows={4} maxLength={300} showCount placeholder="请输入打手端公告内容" />
+        </Form.Item>
+        <Space>
+          <Button type="primary" htmlType="submit" loading={saving}>
+            保存公告
+          </Button>
+          <Typography.Text type="secondary">关闭后打手端不显示公告栏。</Typography.Text>
+        </Space>
+      </Form>
+    </Card>
+  )
+}
diff --git a/apps/frontend/src/services/admin/worker-platform.ts b/apps/frontend/src/services/admin/worker-platform.ts
index 569791f9..2959af75 100644
--- a/apps/frontend/src/services/admin/worker-platform.ts
+++ b/apps/frontend/src/services/admin/worker-platform.ts
@@ -17,6 +17,7 @@ import type {
   WorkerOrderFeedback,
   WorkerPlatformNotificationConfig,
   WorkerProductMatchConfig,
+  WorkerAnnouncementConfig,
   WorkerLevel,
   WorkerListResponse,
   WorkerUser,
@@ -41,6 +42,14 @@ export function fetchAdminWorkerPlatformSummary() {
   }>('/api/v1/admin/worker-platform/summary')
 }
 
+export function fetchAdminWorkerAnnouncement() {
+  return apiGet<WorkerAnnouncementConfig>('/api/v1/admin/worker-platform/announcement')
+}
+
+export function saveAdminWorkerAnnouncement(payload: WorkerAnnouncementConfig) {
+  return apiPost<WorkerAnnouncementConfig>('/api/v1/admin/worker-platform/announcement', payload)
+}
+
 export function fetchAdminWorkerCancelRequests(
   status: 'pending' | 'approved' | 'rejected' = 'pending',
 ) {
diff --git a/apps/frontend/src/services/worker.ts b/apps/frontend/src/services/worker.ts
index 9330fa54..5902a158 100644
--- a/apps/frontend/src/services/worker.ts
+++ b/apps/frontend/src/services/worker.ts
@@ -8,6 +8,7 @@ import type {
   WorkerFinanceRequest,
   WorkerCancelRequest,
   WorkerCancelRequestRisk,
+  WorkerAnnouncementConfig,
   WorkerOrderFeedback,
   WorkerHallOrdersResponse,
   WorkerLeaderboardResponse,
@@ -130,6 +131,10 @@ export function fetchWorkerProfile() {
   return apiGet<WorkerProfileResponse>('/api/v1/worker/profile')
 }
 
+export function fetchWorkerAnnouncement() {
+  return apiGet<WorkerAnnouncementConfig>('/api/v1/worker/announcement')
+}
+
 export function fetchWorkerWalletLedgers(params?: Record<string, unknown>) {
   return apiGet<WorkerListResponse<WorkerWalletLedger>>(
     '/api/v1/worker/profile/wallet-ledgers',
diff --git a/apps/frontend/src/styles/worker.css b/apps/frontend/src/styles/worker.css
index 4e863131..3deb807e 100644
--- a/apps/frontend/src/styles/worker.css
+++ b/apps/frontend/src/styles/worker.css
@@ -20,6 +20,59 @@
   flex-wrap: wrap;
 }
 
+.worker-announcement {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  height: 42px;
+  margin: 0 0 16px;
+  padding: 0 14px;
+  overflow: hidden;
+  border: 1px solid #ffe0a3;
+  border-radius: 8px;
+  background: #fffaf0;
+  color: #a86600;
+}
+
+.worker-announcement-label {
+  display: inline-flex;
+  flex: 0 0 auto;
+  align-items: center;
+  gap: 5px;
+  padding: 3px 8px;
+  border-radius: 6px;
+  background: #f59f00;
+  color: #fff;
+  font-size: 13px;
+  font-weight: 600;
+}
+
+.worker-announcement-viewport {
+  min-width: 0;
+  overflow: hidden;
+  white-space: nowrap;
+}
+
+.worker-announcement-track {
+  display: inline-flex;
+  min-width: max-content;
+  gap: 56px;
+  animation: worker-announcement-scroll 22s linear infinite;
+}
+
+.worker-announcement:hover .worker-announcement-track {
+  animation-play-state: paused;
+}
+
+@keyframes worker-announcement-scroll {
+  from {
+    transform: translateX(0);
+  }
+  to {
+    transform: translateX(calc(-50% - 28px));
+  }
+}
+
 .worker-page-head h3,
 .worker-page-head > .ant-typography {
   margin: 0 !important;
@@ -2023,6 +2076,19 @@ body {
 }
 
 @media (max-width: 720px) {
+  .worker-announcement {
+    height: 38px;
+    margin-bottom: 10px;
+    padding: 0 10px;
+    gap: 8px;
+    font-size: 13px;
+  }
+
+  .worker-announcement-label {
+    padding: 3px 6px;
+    font-size: 12px;
+  }
+
   .worker-page-head {
     align-items: stretch;
     flex-direction: column;
diff --git a/apps/frontend/src/types/worker-platform.ts b/apps/frontend/src/types/worker-platform.ts
index 3ad64a19..bd9b3c61 100644
--- a/apps/frontend/src/types/worker-platform.ts
+++ b/apps/frontend/src/types/worker-platform.ts
@@ -185,6 +185,11 @@ export type WorkerProductMatchConfig = {
   legacyFallbackEnabled: boolean
 }
 
+export type WorkerAnnouncementConfig = {
+  enabled: boolean
+  content: string
+}
+
 export type WorkerWithdrawalAccount = {
   accountChannel: string
   accountName: string