diff --git a/application/admin/controller/Login.php b/application/admin/controller/Login.php
index 800279bbc..9f2015a3d 100644
--- a/application/admin/controller/Login.php
+++ b/application/admin/controller/Login.php
@@ -40,8 +40,7 @@ class Login extends Controller
         $this->title = '系统登录';
         if ($this->request->isGet()) {
             // 运行环境检查
-            list($host,) = explode(':', $this->request->host());
-            if (in_array($host, ['127.0.0.1', 'localhost', 'thinkadmin.top', 'ctolog.com'])) {
+            if (in_array($this->request->rootDomain(), ['127.0.0.1', 'localhost', 'thinkadmin.top', 'ctolog.com'])) {
                 $this->devMode = true;
             } else {
                 $this->devMode = false;