diff --git a/vehicle-data-platform/apps/web/src/App.tsx b/vehicle-data-platform/apps/web/src/App.tsx
index 6d62f295..4f2a2ce1 100644
--- a/vehicle-data-platform/apps/web/src/App.tsx
+++ b/vehicle-data-platform/apps/web/src/App.tsx
@@ -1,6 +1,7 @@
 import { useCallback, useEffect, useState } from 'react';
 import { Toast } from '@douyinfe/semi-ui';
 import { api } from './api/client';
+import type { VehicleServiceStatus } from './api/types';
 import { buildAppHash, parseAppHash } from './domain/appRoute';
 import { AppShell, type PageKey } from './layout/AppShell';
 import { Dashboard } from './pages/Dashboard';
@@ -19,6 +20,7 @@ export default function App() {
   const [analysisVin, setAnalysisVin] = useState(initialVehicleKey);
   const [activeProtocol, setActiveProtocol] = useState(initialRoute.protocol ?? '');
   const [linkIssueCount, setLinkIssueCount] = useState<number | null>(null);
+  const [currentVehicleStatus, setCurrentVehicleStatus] = useState<VehicleServiceStatus | undefined>();
 
   const refreshOpsHealth = useCallback((showError = true) => {
     return api.opsHealth()
@@ -91,6 +93,7 @@ export default function App() {
     try {
       const resolved = await api.vehicleResolve(new URLSearchParams({ keyword: lookupKey }));
       const nextKey = resolved.resolved && resolved.vin ? resolved.vin : lookupKey;
+      setCurrentVehicleStatus(resolved.serviceStatus);
       setActiveVin(nextKey);
       setActiveProtocol(nextProtocol);
       setActivePage('detail');
@@ -149,7 +152,7 @@ export default function App() {
   };
 
   return (
-    <AppShell activePage={activePage} linkIssueCount={linkIssueCount} onChange={navigatePage} onVehicleSearch={openVehicle}>
+    <AppShell activePage={activePage} linkIssueCount={linkIssueCount} currentVehicleStatus={currentVehicleStatus} onChange={navigatePage} onVehicleSearch={openVehicle}>
       {pages[activePage]}
     </AppShell>
   );
diff --git a/vehicle-data-platform/apps/web/src/layout/AppShell.tsx b/vehicle-data-platform/apps/web/src/layout/AppShell.tsx
index 9519f6c8..7b6c6b73 100644
--- a/vehicle-data-platform/apps/web/src/layout/AppShell.tsx
+++ b/vehicle-data-platform/apps/web/src/layout/AppShell.tsx
@@ -11,6 +11,7 @@ import {
 } from '@douyinfe/semi-icons';
 import type { ReactNode } from 'react';
 import { useState } from 'react';
+import type { VehicleServiceStatus } from '../api/types';
 
 export type PageKey = 'dashboard' | 'vehicles' | 'realtime' | 'detail' | 'history' | 'mileage' | 'quality';
 
@@ -34,12 +35,14 @@ function linkHealthClassName(count: number | null) {
 export function AppShell({
   activePage,
   linkIssueCount,
+  currentVehicleStatus,
   onChange,
   onVehicleSearch,
   children
 }: {
   activePage: PageKey;
   linkIssueCount: number | null;
+  currentVehicleStatus?: VehicleServiceStatus;
   onChange: (page: PageKey) => void;
   onVehicleSearch: (keyword: string) => void | Promise<void>;
   children: ReactNode;
@@ -86,6 +89,11 @@ export function AppShell({
               <Button theme="solid" type="primary" loading={searching} onClick={search}>查询车辆</Button>
             </Space>
             <Space spacing={12}>
+              {currentVehicleStatus ? (
+                <Tag color={currentVehicleStatus.severity === 'ok' ? 'green' : currentVehicleStatus.severity === 'error' ? 'red' : 'orange'}>
+                  当前车辆：{currentVehicleStatus.title}
+                </Tag>
+              ) : null}
               <Tag color="blue">生产环境</Tag>
               <Tag color="grey">多源接入 / 一个车辆服务</Tag>
               <Button size="small" className={linkHealthClassName(linkIssueCount)} onClick={() => onChange('quality')}>
diff --git a/vehicle-data-platform/apps/web/src/test/App.test.tsx b/vehicle-data-platform/apps/web/src/test/App.test.tsx
index 11cf2e3a..2426d433 100644
--- a/vehicle-data-platform/apps/web/src/test/App.test.tsx
+++ b/vehicle-data-platform/apps/web/src/test/App.test.tsx
@@ -57,6 +57,97 @@ test('shows vehicle service status distribution on dashboard', async () => {
   expect(screen.getByText('39')).toBeInTheDocument();
 });
 
+test('shows resolved vehicle service status after topbar search', async () => {
+  window.history.replaceState(null, '', '/#/dashboard');
+  vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
+    const path = String(input);
+    if (path.includes('/api/ops/health')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: { linkHealth: [], kafkaLag: 0, redisOnlineKeys: 0, tdengineWritable: true, mysqlWritable: true, runtime: { requestTimeoutMs: 5000 } },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    if (path.includes('/api/dashboard/summary')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: { onlineVehicles: 3, activeToday: 4, frameToday: 1286320, issueVehicles: 7, kafkaLag: 0, protocols: [], serviceStatuses: [], linkHealth: [] },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    if (path.includes('/api/vehicles/resolve')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            lookupKey: '粤AG18312',
+            resolved: true,
+            vin: 'LB9A32A24R0LS1426',
+            plate: '粤AG18312',
+            phone: '13307795425',
+            oem: 'G7s',
+            protocols: ['GB32960', 'JT808'],
+            online: true,
+            lastSeen: '2026-07-03 20:12:10',
+            serviceStatus: {
+              status: 'degraded',
+              severity: 'warning',
+              title: '部分来源离线',
+              detail: '1/2 个来源在线',
+              sourceCount: 2,
+              onlineSourceCount: 1
+            }
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    if (path.includes('/api/vehicle-service')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            vin: 'LB9A32A24R0LS1426',
+            lookupKey: 'LB9A32A24R0LS1426',
+            lookupResolved: true,
+            sources: ['GB32960', 'JT808'],
+            sourceStatus: [],
+            realtime: [],
+            history: { items: [], total: 0, limit: 20, offset: 0 },
+            raw: { items: [], total: 0, limit: 10, offset: 0 },
+            mileage: { items: [], total: 0, limit: 20, offset: 0 },
+            quality: { items: [], total: 0, limit: 20, offset: 0 }
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    return {
+      ok: true,
+      json: async () => ({
+        data: { items: [], total: 0, limit: 10, offset: 0 },
+        traceId: 'trace-test',
+        timestamp: 1783094400000
+      })
+    } as Response;
+  });
+
+  render(<App />);
+
+  fireEvent.change(screen.getByPlaceholderText('搜索 VIN / 车牌 / 手机号'), { target: { value: '粤AG18312' } });
+  fireEvent.click(screen.getByRole('button', { name: '查询车辆' }));
+
+  expect(await screen.findByText('当前车辆：部分来源离线')).toBeInTheDocument();
+});
+
 test('shows row service status in dashboard vehicle previews', async () => {
   window.history.replaceState(null, '', '/#/dashboard');
   vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {