diff --git a/application/common.php b/application/common.php
index fa160030b771c163ecb4ac2a6e3fc262b875d459..27614e5f5b3cfeb627c2cb2c768abd91d6bbe4ff 100755
--- a/application/common.php
+++ b/application/common.php
@@ -86,8 +86,10 @@ if (!function_exists('cdnurl')) {
     function cdnurl($url, $domain = false)
     {
         $regex = "/^((?:[a-z]+:)?\/\/|data:image\/)(.*)/i";
+        $regexDomain = "/^(?:[a-z]+:)?\/\/(.*)/i";
         $cdnurl = \think\Config::get('upload.cdnurl');
-        $url = preg_match($regex, $url) || ($cdnurl && stripos($url, $cdnurl) === 0) ? $url : $cdnurl . $url;
+        $url = !is_bool($domain) && preg_match($regexDomain, $domain) ? $domain . $url  : $url;
+        $url = preg_match($regex, $url) || ($cdnurl && stripos($url, $cdnurl) === 0) || $domain === false ? $url : $cdnurl . $url;
         if ($domain && !preg_match($regex, $url)) {
             $domain = is_bool($domain) ? request()->domain() : $domain;
             $url = $domain . $url;