diff --git a/web/html/xui/component/setting.html b/web/html/xui/component/setting.html
index 5e371187..9a09386e 100644
--- a/web/html/xui/component/setting.html
+++ b/web/html/xui/component/setting.html
@@ -12,7 +12,7 @@
         </a-col>
         <a-col :lg="24" :xl="12">
             <template v-if="type === 'text'">
-                <a-input :value="value" @input="$emit('input', $event.target.value)"></a-input>
+                <a-input :value="value" @input="$emit('input', $event.target.value)" :placeholder="placeholder"></a-input>
             </template>
             <template v-else-if="type === 'number'">
                 <a-input-number :value="value" @change="value => $emit('input', value)" :min="min" :step="step" style="width: 100%;"></a-input-number>
@@ -28,7 +28,7 @@
 {{define "component/setting"}}
 <script>
     Vue.component('setting-list-item', {
-        props: ["type", "title", "desc", "value", "min", "step"],
+        props: ["type", "title", "desc", "value", "min", "step", "placeholder"],
         template: `{{template "component/settingListItem"}}`,
     });
 </script>
diff --git a/web/html/xui/settings.html b/web/html/xui/settings.html
index ce8c2f3d..fdd59b76 100644
--- a/web/html/xui/settings.html
+++ b/web/html/xui/settings.html
@@ -176,7 +176,7 @@
                                 <setting-list-item type="text" title='{{ i18n "pages.settings.subPath"}}' desc='{{ i18n "pages.settings.subPathDesc"}}' v-model="allSetting.subPath"></setting-list-item>
                                 <setting-list-item type="text" title='{{ i18n "pages.settings.subCertPath"}}' desc='{{ i18n "pages.settings.subCertPathDesc"}}' v-model="allSetting.subCertFile"></setting-list-item>
                                 <setting-list-item type="text" title='{{ i18n "pages.settings.subKeyPath"}}' desc='{{ i18n "pages.settings.subKeyPathDesc"}}' v-model="allSetting.subKeyFile"></setting-list-item>
-                                <setting-list-item type="text" title='{{ i18n "pages.settings.subURI"}}' desc='{{ i18n "pages.settings.subURIDesc"}}' v-model="allSetting.subURI"></setting-list-item>
+                                <setting-list-item type="text" title='{{ i18n "pages.settings.subURI"}}' desc='{{ i18n "pages.settings.subURIDesc"}}' v-model="allSetting.subURI" placeholder="(http|https)://domain[:port]/path"></setting-list-item>
                                 <setting-list-item type="number" title='{{ i18n "pages.settings.subUpdates"}}' desc='{{ i18n "pages.settings.subUpdatesDesc"}}' v-model="allSetting.subUpdates"></setting-list-item>
                             </a-list>
                         </a-tab-pane>