diff --git a/web/views/@default/servers/components/cache/createPopup.html b/web/views/@default/servers/components/cache/createPopup.html
index 12431739..61b57646 100644
--- a/web/views/@default/servers/components/cache/createPopup.html
+++ b/web/views/@default/servers/components/cache/createPopup.html
@@ -103,7 +103,7 @@
             <tr>
                 <td>预热超时时间</td>
                 <td>
-                    <time-duration-box :v-name="'fetchTimeoutJSON'" :v-unit="'minute'"></time-duration-box>
+                    <time-duration-box :v-name="'fetchTimeoutJSON'" :v-unit="'minute'" maxlength="6"></time-duration-box>
                     <p class="comment">预热读取源站的超时时间，默认20分钟。</p>
                 </td>
             </tr>
diff --git a/web/views/@default/servers/components/cache/update.html b/web/views/@default/servers/components/cache/update.html
index 6d6f4019..9aa71c65 100644
--- a/web/views/@default/servers/components/cache/update.html
+++ b/web/views/@default/servers/components/cache/update.html
@@ -110,7 +110,7 @@
                 <tr>
                     <td>预热超时时间</td>
                     <td>
-                        <time-duration-box :v-name="'fetchTimeoutJSON'" :v-value="cachePolicy.fetchTimeout"></time-duration-box>
+                        <time-duration-box :v-name="'fetchTimeoutJSON'" :v-value="cachePolicy.fetchTimeout" maxlength="6"></time-duration-box>
                         <p class="comment">预热读取源站的超时时间，默认20分钟。</p>
                     </td>
                 </tr>