diff --git a/application/admin/model/Node.php b/application/admin/model/Node.php
index d376cb43a..d0b83b9a7 100644
--- a/application/admin/model/Node.php
+++ b/application/admin/model/Node.php
@@ -39,6 +39,39 @@ class Node {
         return false;
     }
 
+    /**
+     * 获取授权节点
+     * @staticvar array $nodes
+     * @return array
+     */
+    public static function getAuthNode() {
+        static $nodes = [];
+        if (empty($nodes)) {
+            $nodes = cache('need_access_node');
+            if (empty($nodes)) {
+                $nodes = Db::name('SystemNode')->where('is_auth', '1')->column('node');
+                cache('need_access_node', $nodes);
+            }
+        }
+        return $nodes;
+    }
+
+    /**
+     * 检查用户节点权限
+     * @param string $node
+     * @return bool
+     */
+    public static function checkAuthNode($node) {
+        $auth_node = strtolower($node);
+        if (session('user.username') === 'admin' || stripos($node, 'admin/index') === 0) {
+            return true;
+        }
+        if (!in_array($auth_node, self::getAuthNode())) {
+            return true;
+        }
+        return in_array($auth_node, (array) session('user.nodes'));
+    }
+
     /**
      * 获取系统代码节点
      * @return array
diff --git a/application/common.php b/application/common.php
index e238afb31..00d518f70 100644
--- a/application/common.php
+++ b/application/common.php
@@ -13,6 +13,7 @@
 // +----------------------------------------------------------------------
 
 
+use app\admin\model\Node as NodeModal;
 use think\Config;
 use think\Db;
 use Wechat\Loader;
@@ -73,18 +74,7 @@ function decode($string) {
  * @return bool
  */
 function auth($node) {
-    $nodes = cache('need_access_node');
-    if (empty($nodes)) {
-        $nodes = Db::name('SystemNode')->where('is_auth', '1')->column('node');
-        cache('need_access_node', $nodes);
-    }
-    if (session('user.username') === 'admin' || stripos($node, 'admin/index') === 0) {
-        return true;
-    }
-    if (!in_array(strtolower($node), array_values($nodes))) {
-        return true;
-    }
-    return in_array(strtolower($node), (array) session('user.nodes'));
+    return NodeModal::checkAuthNode($node);
 }
 
 /**