diff --git a/library/think/db/Connection.php b/library/think/db/Connection.php
index 38887b09..8987391c 100644
--- a/library/think/db/Connection.php
+++ b/library/think/db/Connection.php
@@ -226,13 +226,17 @@ abstract class Connection
     /**
      * 设置数据库的配置参数
      * @access public
-     * @param string    $config 配置名称
-     * @param mixed     $value 配置值
+     * @param string|array      $config 配置名称
+     * @param mixed             $value 配置值
      * @return void
      */
-    public function setConfig($config, $value)
+    public function setConfig($config, $value = '')
     {
-        $this->config[$config] = $value;
+        if (is_array($config)) {
+            $this->config = array_merge($this->config, $config);
+        } else {
+            $this->config[$config] = $value;
+        }
     }
 
     /**
@@ -247,9 +251,10 @@ abstract class Connection
     public function connect(array $config = [], $linkNum = 0, $autoConnection = false)
     {
         if (!isset($this->links[$linkNum])) {
-            if (empty($config)) {
-                $config = $this->config;
+            if ($config) {
+                $this->setConfig($config);
             }
+            $config = $this->config;
             // 连接参数
             if (isset($config['params']) && is_array($config['params'])) {
                 $params = $config['params'] + $this->params;
@@ -281,20 +286,6 @@ abstract class Connection
         return $this->links[$linkNum];
     }
 
-    /**
-     * 获取当前数据库的驱动类型
-     * @access public
-     * @return string
-     */
-    public function getDriverName()
-    {
-        if ($this->linkID) {
-            return $this->linkID->getAttribute(PDO::ATTR_DRIVER_NAME);
-        } else {
-            return $this->config['type'];
-        }
-    }
-
     /**
      * 释放查询结果
      * @access public
diff --git a/library/think/db/Query.php b/library/think/db/Query.php
index d838dc39..33d2d1f6 100644
--- a/library/think/db/Query.php
+++ b/library/think/db/Query.php
@@ -59,7 +59,7 @@ class Query
     public function __construct(Connection $connection = null, $model = '')
     {
         $this->connection = $connection ?: Db::connect([], true);
-        $this->driver     = $this->connection->getDriverName();
+        $this->driver     = $this->connection->getConfig('type');
         $this->prefix     = $this->connection->getConfig('prefix');
         $this->model      = $model;
     }