diff --git a/app/common/utils/pdf/template/usedCar.stub b/app/common/utils/pdf/template/usedCar.stub
index 398986c..f2b111c 100644
--- a/app/common/utils/pdf/template/usedCar.stub
+++ b/app/common/utils/pdf/template/usedCar.stub
@@ -87,7 +87,7 @@
     </tr>
     <tr>
         <td class="label">里程</td>
-        <td><?= $car['mileage'] ?></td>
+        <td><?= $car['mileage'].'km' ?></td>
     </tr>
     <tr>
         <td class="label">马力</td>