diff --git a/app/install/controller/Index.php b/app/install/controller/Index.php
index d4c13618e..a460959fc 100755
--- a/app/install/controller/Index.php
+++ b/app/install/controller/Index.php
@@ -163,6 +163,9 @@ class Index extends Common
             return $ret;
         }
 
+        // 数据库类型默认 mysql
+        $params['DB_TYPE'] = 'mysql';
+
         // 配置文件校验
         if(file_exists(ROOT.'config/database.php'))
         {
@@ -200,6 +203,9 @@ class Index extends Common
             return DataReturn('数据库连接失败', -1);
         }
 
+        // 数据库类型默认 mysql
+        $params['DB_TYPE'] = 'mysql';
+
         // mysql版本
         $ret = $this->IsVersion($db, $params['DB_CHARSET']);
         if($ret['code'] != 0)
@@ -444,11 +450,6 @@ php;
     {
         // 请求类型
         $p = [
-            [
-                'checked_type'      => 'empty',
-                'key_name'          => 'DB_TYPE',
-                'error_msg'         => '请选择数据库类型',
-            ],
             [
                 'checked_type'      => 'in',
                 'key_name'          => 'DB_CHARSET',