diff --git a/vehicle-data-platform/apps/web/src/pages/Realtime.tsx b/vehicle-data-platform/apps/web/src/pages/Realtime.tsx
index b51f4f03..284c21a6 100644
--- a/vehicle-data-platform/apps/web/src/pages/Realtime.tsx
+++ b/vehicle-data-platform/apps/web/src/pages/Realtime.tsx
@@ -2689,7 +2689,7 @@ export function Realtime({
           applyFilters(nextFilters);
         }} style={{ marginBottom: 12 }}>
           <Form.Input field="keyword" label="车辆关键词" placeholder="VIN / 车牌 / 手机号 / OEM" style={{ width: 260 }} />
-          <Form.Select field="protocol" label="数据通道" placeholder="全部数据通道" style={{ width: 180 }}>
+          <Form.Select field="protocol" label="来源证据筛选" placeholder="全部来源证据" style={{ width: 180 }}>
             <Select.Option value="GB32960">GB32960</Select.Option>
             <Select.Option value="JT808">JT808</Select.Option>
             <Select.Option value="YUTONG_MQTT">YUTONG_MQTT</Select.Option>
@@ -2743,7 +2743,7 @@ export function Realtime({
                 { label: '定位有效', value: locatedCount, color: locatedCount > 0 ? 'blue' as const : 'orange' as const },
                 { label: '需要关注', value: degradedCount, color: degradedCount > 0 ? 'orange' as const : 'green' as const, action: () => applyFilters({ ...filters, serviceStatus: 'degraded' }) },
                 { label: '更新超时', value: staleCount, color: staleCount > 0 ? 'red' as const : 'green' as const },
-                { label: '数据通道', value: primaryProtocols.size, color: 'blue' as const }
+                { label: '来源证据', value: primaryProtocols.size, color: 'blue' as const }
               ].map((item) => (
                 item.action ? (
                   <button
@@ -2783,7 +2783,7 @@ export function Realtime({
           </div>
         </div>
         <div className="vp-source-coverage-board">
-          <div className="vp-current-service-title">车辆覆盖概览</div>
+          <div className="vp-current-service-title">车辆来源证据覆盖</div>
           <div className="vp-source-coverage-grid">
             {sourceCoverageRows.length === 0 ? (
               <Typography.Text type="tertiary">当前页暂无车辆实时数据。</Typography.Text>
@@ -2792,7 +2792,7 @@ export function Realtime({
                 key={item.protocol}
                 type="button"
                 className="vp-source-coverage-item"
-                aria-label={`筛选数据通道 ${item.protocol}`}
+                aria-label={`筛选来源证据 ${item.protocol}`}
                 onClick={() => applyFilters({ ...filters, protocol: item.protocol })}
               >
                 <div className="vp-source-coverage-item-head">
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 7d3a1d95..0201dd85 100644
--- a/vehicle-data-platform/apps/web/src/test/App.test.tsx
+++ b/vehicle-data-platform/apps/web/src/test/App.test.tsx
@@ -10430,6 +10430,71 @@ test('realtime page prioritizes customer vehicle monitoring command center', asy
   expect(screen.getByRole('button', { name: '实时处置优先级 1 粤A实时2 查看告警' })).toBeInTheDocument();
 });
 
+test('realtime page treats protocol filters as source evidence for vehicle service', async () => {
+  window.history.replaceState(null, '', '/#/realtime');
+  vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
+    const path = String(input);
+    if (path.includes('/api/realtime/vehicles')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            items: [{
+              vin: 'VIN-RT-EVIDENCE',
+              plate: '粤A证据1',
+              protocols: ['GB32960', 'JT808'],
+              sourceStatus: [
+                { protocol: 'GB32960', online: true, lastSeen: '2026-07-03 20:12:10', hasRealtime: true, hasHistory: true, hasRaw: true, hasMileage: true },
+                { protocol: 'JT808', online: true, lastSeen: '2026-07-03 20:12:08', hasRealtime: true, hasHistory: true, hasRaw: true, hasMileage: true }
+              ],
+              sourceCount: 2,
+              onlineSourceCount: 2,
+              online: true,
+              primaryProtocol: 'GB32960',
+              longitude: 113.2,
+              latitude: 23.1,
+              speedKmh: 30,
+              socPercent: 78,
+              totalMileageKm: 119925,
+              lastSeen: '2026-07-03 20:12:10',
+              bindingStatus: 'bound',
+              serviceStatus: {
+                status: 'healthy',
+                severity: 'ok',
+                title: '服务正常',
+                detail: '2/2 来源在线',
+                sourceCount: 2,
+                onlineSourceCount: 2
+              }
+            }],
+            total: 1,
+            limit: 50,
+            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 />);
+
+  expect(await screen.findByRole('heading', { name: '实时监控' })).toBeInTheDocument();
+  expect(screen.getByText('来源证据筛选')).toBeInTheDocument();
+  expect(screen.getByText('全部来源证据')).toBeInTheDocument();
+  expect(screen.getByText('车辆来源证据覆盖')).toBeInTheDocument();
+  expect(screen.getByRole('button', { name: '筛选来源证据 GB32960' })).toBeInTheDocument();
+});
+
 test('frames realtime page as one vehicle service with source evidence', async () => {
   window.history.replaceState(null, '', '/#/realtime');
   const writeText = vi.fn(() => Promise.resolve());
@@ -11077,10 +11142,10 @@ test('copies realtime operations summary from realtime page', async () => {
   expect(screen.getByRole('button', { name: '实时筛选 需要关注 2' })).toBeInTheDocument();
   expect(screen.getByText('建议处置')).toBeInTheDocument();
   expect(screen.getByText('查看需关注车辆 2')).toBeInTheDocument();
-  expect(screen.getByText('车辆覆盖概览')).toBeInTheDocument();
-  expect(screen.getByRole('button', { name: '筛选数据通道 GB32960' })).toHaveTextContent('GB32960');
-  expect(screen.getByRole('button', { name: '筛选数据通道 JT808' })).toHaveTextContent('2 辆');
-  expect(screen.getByRole('button', { name: '筛选数据通道 YUTONG_MQTT' })).toHaveTextContent('超时 1');
+  expect(screen.getByText('车辆来源证据覆盖')).toBeInTheDocument();
+  expect(screen.getByRole('button', { name: '筛选来源证据 GB32960' })).toHaveTextContent('GB32960');
+  expect(screen.getByRole('button', { name: '筛选来源证据 JT808' })).toHaveTextContent('2 辆');
+  expect(screen.getByRole('button', { name: '筛选来源证据 YUTONG_MQTT' })).toHaveTextContent('超时 1');
   expect(screen.getByText('实时覆盖判读')).toBeInTheDocument();
   expect(screen.getByText('在线率')).toBeInTheDocument();
   expect(screen.getAllByText('66.7%').length).toBeGreaterThanOrEqual(3);
@@ -11122,7 +11187,7 @@ test('copies realtime operations summary from realtime page', async () => {
   expect(writeText).toHaveBeenCalledWith(expect.stringContaining('历史查询：http://localhost:3000/api/history/raw-frames?protocol=JT808&vin=VIN-RT-SUMMARY-003&limit=20&includeFields=true'));
   fireEvent.click(screen.getByRole('button', { name: '实时筛选 需要关注 2' }));
   expect(window.location.hash).toBe('#/realtime?protocol=JT808&serviceStatus=degraded&online=online');
-  fireEvent.click(screen.getByRole('button', { name: '筛选数据通道 GB32960' }));
+  fireEvent.click(screen.getByRole('button', { name: '筛选来源证据 GB32960' }));
   expect(window.location.hash).toBe('#/realtime?protocol=GB32960&serviceStatus=degraded&online=online');
 });