diff --git a/src/modules/mileage/MonitoringView.tsx b/src/modules/mileage/MonitoringView.tsx
index ce09130..fb517b8 100644
--- a/src/modules/mileage/MonitoringView.tsx
+++ b/src/modules/mileage/MonitoringView.tsx
@@ -541,7 +541,7 @@ export default function MonitoringView() {
                         </td>
                         <td className="px-3 py-2 text-right">
                           <span className={`text-xs font-mono font-bold ${v.isDataSynced ? 'text-slate-300' : 'text-slate-600'}`}>
-                            {v.isDataSynced && v.totalKm != null ? <>{v.totalKm.toLocaleString()} <span className="text-[8px] text-slate-500">km</span></> : <span className="text-[8px] text-amber-500/50">未对接</span>}
+                            {v.totalKm != null ? <>{v.totalKm.toLocaleString()} <span className="text-[8px] text-slate-500">km</span></> : <span className="text-[8px] text-amber-500/50">未对接</span>}
                           </span>
                         </td>
                       </tr>
@@ -937,7 +937,7 @@ export default function MonitoringView() {
                 <div className="flex items-center gap-1">
                   <span className="text-[7px] font-black text-slate-400/60 bg-slate-100 w-3 h-3 rounded flex items-center justify-center leading-none">总</span>
                   <span className="text-[8px] font-bold text-slate-300">
-                    {v.isDataSynced && v.totalKm != null ? `${v.totalKm.toLocaleString()} km` : '未对接'}
+                    {v.totalKm != null ? `${v.totalKm.toLocaleString()} km` : '未对接'}
                   </span>
                 </div>
               </div>
diff --git a/src/modules/mileage/xlsx-export.ts b/src/modules/mileage/xlsx-export.ts
index ba89af7..5b8de8e 100644
--- a/src/modules/mileage/xlsx-export.ts
+++ b/src/modules/mileage/xlsx-export.ts
@@ -17,8 +17,11 @@ function statusLabel(v: MonitoringVehicle): string {
 }
 
 function mileageCell(v: MonitoringVehicle, kind: 'today' | 'total'): string | number {
-  if (!v.isDataSynced) return '未对接';
-  if (kind === 'today') return Math.max(0, Math.round(v.dailyKm || 0));
+  if (kind === 'today') {
+    if (!v.isDataSynced) return '未对接';
+    return Math.max(0, Math.round(v.dailyKm || 0));
+  }
+  // 累计里程：当日未对接也允许使用历史兜底值
   return v.totalKm != null ? Math.round(v.totalKm) : '未对接';
 }