diff --git a/application/admin/view/default/site/extends.html b/application/admin/view/default/site/extends.html
new file mode 100644
index 000000000..d7abfacec
--- /dev/null
+++ b/application/admin/view/default/site/extends.html
@@ -0,0 +1,33 @@
+{{include file="public/header" /}}
+
+<!-- right content start  -->
+<div class="content-right">
+    <div class="content">
+        <!-- table nav start -->
+        {{include file="site/nav" /}}
+        <!-- table nav end -->
+
+        <!-- form start -->
+        <form class="am-form form-validation view-save" action="{{:MyUrl('admin/site/save')}}" method="POST" request-type="ajax-url" request-value="{{:MyUrl('admin/site/index', ['nav_type'=>'extends'])}}" enctype="multipart/form-data">
+            <div class="am-form-group">
+                <label>{{$data.common_is_login_answer.name}}<span class="am-form-group-label-tips">{{$data.common_is_login_answer.describe}}</span></label>
+                <select name="{{$data.common_is_login_answer.only_tag}}" class="am-radius chosen-select c-p" data-validation-message="{{$data.common_is_login_answer.error_tips}}" required>
+                    {{foreach $common_is_text_list as $v}}
+                        <option value="{{$v.id}}" {{if isset($data['common_is_login_answer']['value']) and $data['common_is_login_answer']['value'] eq $v['id']}}selected{{/if}}>{{$v.name}}</option>
+                    {{/foreach}}
+                </select>
+            </div>
+            
+            <div class="am-form-group am-form-group-refreshing">
+                <input type="hidden" name="nav_type" value="{{$nav_type}}" />
+                <button type="submit" class="am-btn am-btn-primary am-radius btn-loading-example am-btn-sm am-btn-block" data-am-loading="{loadingText:'处理中...'}">保存</button>
+            </div>
+        </form>
+        <!-- form end -->
+    </div>
+</div>
+<!-- right content end  -->
+        
+<!-- footer start -->
+{{include file="public/footer" /}}
+<!-- footer end
\ No newline at end of file
diff --git a/application/admin/view/default/site/nav.html b/application/admin/view/default/site/nav.html
index 66dcfb82c..598f14394 100644
--- a/application/admin/view/default/site/nav.html
+++ b/application/admin/view/default/site/nav.html
@@ -23,6 +23,9 @@
     <li {{if $nav_type eq 'search'}}class="am-active"{{/if}} data-type="search">
         <a href="{{:MyUrl('admin/site/index', ['nav_type'=>'search'])}}">搜索</a>
     </li>
+    <li {{if $nav_type eq 'extends'}}class="am-active"{{/if}} data-type="extends">
+        <a href="{{:MyUrl('admin/site/index', ['nav_type'=>'extends'])}}">扩展项</a>
+    </li>
 </ul>
 
 {{if in_array($nav_type, ['login', 'forgetpwd'])}}
diff --git a/application/service/AnswerService.php b/application/service/AnswerService.php
index ed2704b55..bab1b5773 100755
--- a/application/service/AnswerService.php
+++ b/application/service/AnswerService.php
@@ -11,6 +11,7 @@
 namespace app\service;
 
 use think\Db;
+use app\service\UserService;
 
 /**
  * 问答/留言服务层
@@ -186,6 +187,16 @@ class AnswerService
      */
     public static function AnswerSave($params = [])
     {
+        // 是否开启登录留言,管理员登录状态可继续操作
+        if(MyC('common_is_login_answer') == 1 && session('admin') === null)
+        {
+            $user = UserService::LoginUserInfo();
+            if(empty($user))
+            {
+                return DataReturn('请先登录', -400);
+            }
+        }
+
         // 参数校验
         $p = [
             [