diff --git a/helper.php b/helper.php
index e0cc719e..007c76cd 100644
--- a/helper.php
+++ b/helper.php
@@ -277,7 +277,7 @@ if (!function_exists('url')) {
      * @param bool|string   $domain 域名
      * @return string
      */
-    function url($url = '', $vars = '', $suffix = true, $domain = false)
+    function url($url = '', $vars = '', $suffix = true, $domain = true)
     {
         return Url::build($url, $vars, $suffix, $domain);
     }
diff --git a/library/think/Url.php b/library/think/Url.php
index 663c5de6..87a79ed0 100644
--- a/library/think/Url.php
+++ b/library/think/Url.php
@@ -20,6 +20,7 @@ class Url
 {
     // 生成URL地址的root
     protected static $root;
+    protected static $bindCheck;
 
     /**
      * URL生成 支持路由反射
@@ -29,11 +30,8 @@ class Url
      * @param boolean|string    $domain 是否显示域名 或者直接传入域名
      * @return string
      */
-    public static function build($url = '', $vars = '', $suffix = true, $domain = null)
+    public static function build($url = '', $vars = '', $suffix = true, $domain = true)
     {
-        if (false === $domain && Config::get('url_domain_deploy')) {
-            $domain = true;
-        }
         // 解析URL
         if (0 === strpos($url, '[') && $pos = strpos($url, ']')) {
             // [name] 表示使用路由命名标识生成URL
@@ -112,11 +110,13 @@ class Url
         }
 
         // 检测URL绑定
-        $type = Route::getBind('type');
-        if ($type) {
-            $bind = Route::getBind($type);
-            if (0 === strpos($url, $bind)) {
-                $url = substr($url, strlen($bind) + 1);
+        if (!self::$bindCheck) {
+            $type = Route::getBind('type');
+            if ($type) {
+                $bind = Route::getBind($type);
+                if (0 === strpos($url, $bind)) {
+                    $url = substr($url, strlen($bind) + 1);
+                }
             }
         }
         // 还原URL分隔符
@@ -173,15 +173,28 @@ class Url
             // 解析到 模块/控制器/操作
             $module = $request->module();
             if (true === $domain && 2 == substr_count($url, '/')) {
+                $current = $request->host();
                 $domains = Route::rules('domain');
+                $match   = [];
+                $pos     = [];
                 foreach ($domains as $key => $item) {
                     if (isset($item['[bind]']) && 0 === strpos($url, $item['[bind]'][0])) {
-                        $url    = substr($url, strlen($item['[bind]'][0]) + 1);
-                        $domain = $key;
-                        $module = '';
-                        break;
+                        $pos[$key] = strlen($item['[bind]'][0]) + 1;
+                        $match[]   = $key;
+                        $module    = '';
                     }
                 }
+                if ($match) {
+                    $domain = current($match);
+                    foreach ($match as $item) {
+                        if (0 === strpos($current, $item)) {
+                            $domain = $item;
+                        }
+                    }
+                    self::$bindCheck = true;
+                    $url             = substr($url, $pos[$domain]);
+                }
+
             } elseif ($domain) {
                 if (isset($domains[$domain]['[bind]'][0])) {
                     $bindModule = $domains[$domain]['[bind]'][0];
@@ -213,15 +226,15 @@ class Url
         if (!$domain) {
             return '';
         }
-        $request = Request::instance();
+        $request    = Request::instance();
+        $rootDomain = Config::get('url_domain_root');
         if (true === $domain) {
             // 自动判断域名
             $domain = $request->host();
-            if (Config::get('url_domain_deploy')) {
-                // 根域名
-                $urlDomainRoot = Config::get('url_domain_root');
-                $domains       = Route::rules('domain');
-                $route_domain  = array_keys($domains);
+
+            $domains = Route::rules('domain');
+            if ($domains) {
+                $route_domain = array_keys($domains);
                 foreach ($route_domain as $domain_prefix) {
                     if (0 === strpos($domain_prefix, '*.') && strpos($domain, ltrim($domain_prefix, '*.')) !== false) {
                         foreach ($domains as $key => $rule) {
@@ -230,13 +243,13 @@ class Url
                                 $url    = ltrim($url, $rule);
                                 $domain = $key;
                                 // 生成对应子域名
-                                if (!empty($urlDomainRoot)) {
-                                    $domain .= $urlDomainRoot;
+                                if (!empty($rootDomain)) {
+                                    $domain .= $rootDomain;
                                 }
                                 break;
                             } else if (false !== strpos($key, '*')) {
-                                if (!empty($urlDomainRoot)) {
-                                    $domain .= $urlDomainRoot;
+                                if (!empty($rootDomain)) {
+                                    $domain .= $rootDomain;
                                 }
                                 break;
                             }
@@ -244,13 +257,15 @@ class Url
                     }
                 }
             }
-        } elseif (!strpos($domain, '.')) {
-            $rootDomain = Config::get('url_domain_root');
+
+        } else {
             if (empty($rootDomain)) {
                 $host       = $request->host();
                 $rootDomain = substr_count($host, '.') > 1 ? substr(strstr($host, '.'), 1) : $host;
             }
-            $domain .= '.' . $rootDomain;
+            if (!strpos($domain, $rootDomain)) {
+                $domain .= '.' . $rootDomain;
+            }
         }
         return ($request->isSsl() ? 'https://' : 'http://') . $domain;
     }