diff --git a/We.php b/We.php
index 144d7b0..fd3be40 100644
--- a/We.php
+++ b/We.php
@@ -30,7 +30,7 @@ use WeChat\Exceptions\InvalidInstanceException;
  * @method \WeChat\Media WeChatMedia($options = []) static 微信素材管理
  * @method \WeChat\Menu WeChatMenu($options = []) static 微信菜单管理
  * @method \WeChat\Oauth WeChatOauth($options = []) static 微信网页授权
- * @method \WeChat\WePay WeChatPay($options = []) static 微信支付商户
+ * @method \WeChat\Pay WeChatPay($options = []) static 微信支付商户
  * @method \WeChat\Product WeChatProduct($options = []) static 微信商店管理
  * @method \WeChat\Qrcode WeChatQrcode($options = []) static 微信二维码管理
  * @method \WeChat\Receive WeChatReceive($options = []) static 微信推送管理
diff --git a/_test/pay-download-bill.php b/_test/pay-download-bill.php
index 3bcf9a8..c0181fb 100644
--- a/_test/pay-download-bill.php
+++ b/_test/pay-download-bill.php
@@ -21,7 +21,7 @@ try {
     $config = include "./config.php";
 
     // 3. 创建接口实例
-    $wechat = new \WeChat\WePay($config);
+    $wechat = new \WeChat\Pay($config);
 
     // 4. 组装参数，可以参考官方商户文档
     $options = [
diff --git a/_test/pay-order-close.php b/_test/pay-order-close.php
index a70cae5..3a31ddc 100644
--- a/_test/pay-order-close.php
+++ b/_test/pay-order-close.php
@@ -21,7 +21,7 @@ try {
     $config = include "./config.php";
 
     // 3. 创建接口实例
-    $wechat = new \WeChat\WePay($config);
+    $wechat = new \WeChat\Pay($config);
 
     // 4. 组装参数，可以参考官方商户文档
     $options = '1217752501201407033233368018';
diff --git a/_test/pay-order-create.php b/_test/pay-order-create.php
index 21dfea8..e130bb1 100644
--- a/_test/pay-order-create.php
+++ b/_test/pay-order-create.php
@@ -21,7 +21,7 @@ try {
     $config = include "./config.php";
 
     // 3. 创建接口实例
-    $wechat = new \WeChat\WePay($config);
+    $wechat = new \WeChat\Pay($config);
 
     // 4. 组装参数，可以参考官方商户文档
     $options = [
diff --git a/_test/pay-order-query.php b/_test/pay-order-query.php
index 7e7151c..d993488 100644
--- a/_test/pay-order-query.php
+++ b/_test/pay-order-query.php
@@ -21,7 +21,7 @@ try {
     $config = include "./config.php";
 
     // 3. 创建接口实例
-    $wechat = new \WeChat\WePay($config);
+    $wechat = new \WeChat\Pay($config);
 
     // 4. 组装参数，可以参考官方商户文档
     $options = [
diff --git a/_test/pay-refund-create.php b/_test/pay-refund-create.php
index 8447f06..02b554b 100644
--- a/_test/pay-refund-create.php
+++ b/_test/pay-refund-create.php
@@ -21,7 +21,7 @@ try {
     $config = include "./config.php";
 
     // 3. 创建接口实例
-    $wechat = new \WeChat\WePay($config);
+    $wechat = new \WeChat\Pay($config);
 
     // 4. 组装参数，可以参考官方商户文档
     $options = [
diff --git a/_test/pay-refund-query.php b/_test/pay-refund-query.php
index 7383b89..a812ac4 100644
--- a/_test/pay-refund-query.php
+++ b/_test/pay-refund-query.php
@@ -21,7 +21,7 @@ try {
     $config = include "./config.php";
 
     // 3. 创建接口实例
-    $wechat = new \WeChat\WePay($config);
+    $wechat = new \WeChat\Pay($config);
 
     // 4. 组装参数，可以参考官方商户文档
     $options = [
diff --git a/_test/pay-transfers-create.php b/_test/pay-transfers-create.php
index 889bd19..77d70b0 100644
--- a/_test/pay-transfers-create.php
+++ b/_test/pay-transfers-create.php
@@ -21,7 +21,7 @@ try {
     $config = include "./config.php";
 
     // 3. 创建接口实例
-    $wechat = new \WeChat\WePay($config);
+    $wechat = new \WeChat\Pay($config);
 
     // 4. 组装参数，可以参考官方商户文档
     $options = [
diff --git a/_test/pay-transfersbank-create.php b/_test/pay-transfersbank-create.php
index f70d12d..92147af 100644
--- a/_test/pay-transfersbank-create.php
+++ b/_test/pay-transfersbank-create.php
@@ -21,7 +21,7 @@ try {
     $config = include "./config.php";
 
     // 3. 创建接口实例
-    $wechat = new \WeChat\WePay($config);
+    $wechat = new \WeChat\Pay($config);
 
     // 4. 组装参数，可以参考官方商户文档
     $options = [