diff --git a/library/think/Url.php b/library/think/Url.php
index b4ae0aac..cc68e720 100644
--- a/library/think/Url.php
+++ b/library/think/Url.php
@@ -174,10 +174,10 @@ class Url
             $url = substr($url, 1);
         } else {
             // 解析到 模块/控制器/操作
-            $module = $request->module();
+            $module  = $request->module();
+            $domains = Route::rules('domain');
             if (true === $domain && 2 == substr_count($url, '/')) {
                 $current = $request->host();
-                $domains = Route::rules('domain');
                 $match   = [];
                 $pos     = [];
                 foreach ($domains as $key => $item) {