diff --git a/vehicle-data-platform/apps/web/src/pages/Realtime.tsx b/vehicle-data-platform/apps/web/src/pages/Realtime.tsx
index 688b695b..88e6448c 100644
--- a/vehicle-data-platform/apps/web/src/pages/Realtime.tsx
+++ b/vehicle-data-platform/apps/web/src/pages/Realtime.tsx
@@ -147,7 +147,7 @@ export function Realtime({ onOpenVehicle }: { onOpenVehicle: (vin: string, proto
                     title: '操作',
                     width: 110,
                     render: (_: unknown, row: VehicleRealtimeRow) => (
-                      <Button disabled={!canOpenVehicle(row.vin)} onClick={() => onOpenVehicle(row.vin)}>车辆服务</Button>
+                      <Button disabled={!canOpenVehicle(row.vin)} onClick={() => onOpenVehicle(row.vin, row.primaryProtocol)}>车辆服务</Button>
                     )
                   }
                 ]}
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 f6080a0a..1d6612a2 100644
--- a/vehicle-data-platform/apps/web/src/test/App.test.tsx
+++ b/vehicle-data-platform/apps/web/src/test/App.test.tsx
@@ -1913,7 +1913,7 @@ test('opens current vehicle service from history header with current source evid
   });
 });
 
-test('opens unified vehicle service from realtime vehicles without primary protocol', async () => {
+test('opens vehicle service from realtime vehicles with primary source evidence', async () => {
   window.history.replaceState(null, '', '/#/realtime');
   vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
     const path = String(input);
@@ -1984,7 +1984,7 @@ test('opens unified vehicle service from realtime vehicles without primary proto
   fireEvent.click(screen.getByRole('button', { name: '车辆服务' }));
 
   await waitFor(() => {
-    expect(window.location.hash).toBe('#/detail?keyword=VIN-MQTT-001');
+    expect(window.location.hash).toBe('#/detail?keyword=VIN-MQTT-001&protocol=YUTONG_MQTT');
   });
 });