diff --git a/application/api/common.php b/application/api/common.php
index 6aef27c..f2d073c 100644
--- a/application/api/common.php
+++ b/application/api/common.php
@@ -47,29 +47,20 @@ function createRoundImg($imgpath) {
 }
 
 /**
- * 高效判断远程图片是否存在
+ * 判断远程文件是否存在
  */
-function remoteImageExist($url)
-{
-    // $exif_imagetype = [
-    //  1 => 'GIF',
-    //  2 => 'JPG',
-    //  3 => 'PNG',
-    //  4 => 'SWF',
-    //  5 => 'PSD',
-    //  6 => 'BMP',
-    //  7 => 'TIFF(intel byte order)',
-    //  8 => 'TIFF(motorola byte order)',
-    //  9 => 'JPC',
-    //  10 => 'JP2',
-    //  11 => 'JPX',
-    //  12 => 'JB2',
-    //  13 => 'SWC',
-    //  14 => 'IFF',
-    //  15 => 'WBMP',
-    //  16 => 'XBM'
-    // ];
-    $isExsit = @exif_imagetype($url);
-    if ($isExsit === false) return false;
-    return in_array($isExsit, [1, 2, 3]) ? true : false;
+function url_exists($url) {
+    $ch = curl_init(); 
+    curl_setopt ($ch, CURLOPT_URL, $url); 
+    //不下载
+    curl_setopt($ch, CURLOPT_NOBODY, 1);
+    //设置超时
+    curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, 3); 
+    curl_setopt($ch, CURLOPT_TIMEOUT, 3);
+    curl_exec($ch);
+    $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);  
+    if($http_code == 200) {
+        return true;
+    }
+    return false;
 }
\ No newline at end of file
diff --git a/application/api/controller/User.php b/application/api/controller/User.php
index 6535442..a3547b9 100644
--- a/application/api/controller/User.php
+++ b/application/api/controller/User.php
@@ -681,7 +681,7 @@ class User extends Api
     {
         $user = \app\api\model\User::get($this->auth->id);
         empty($user['avatar']) && $this->error('请先上传头像');
-        !remoteImageExist($user['avatar']) && $this->error('头像失效，请更新头像');
+        !url_exists($user['avatar']) && $this->error('头像失效，请更新头像');
         // 本地路径
         $dir = 'uploads/user';
         if (!file_exists($dir)){