diff --git a/config/config.php b/config/config.php
index b632362..9fa5296 100644
--- a/config/config.php
+++ b/config/config.php
@@ -1,7 +1,7 @@
 <?php
 
 // +----------------------------------------------------------------------
-// | 默认配置
+// | CkFinder 配置
 // +----------------------------------------------------------------------
 
 use itxq\ckfinder\CkFinder;
diff --git a/src/tools/AutoRename.php b/src/tools/AutoRename.php
index 973b420..4de906b 100644
--- a/src/tools/AutoRename.php
+++ b/src/tools/AutoRename.php
@@ -60,7 +60,7 @@ public function autoRename($name, $extension = '')
         if (!empty($extension) && $this->config[self::FILE] === false) {
             return $name;
         }
-        $name = PinYin::make()->turn($name, false, '', 'utf-8');
+        $name = PinYin::make()->turn($name, false, false, '_', 'utf-8');
         // uuid 用于名称为空时
         $name = empty($name) ? $this->uuid() : strtolower($name);
         if ($name === '.' . $extension) {