diff --git a/_test/pay-v3-order-app.php b/_test/pay-v3-order-app.php
index 78c92b6..69143bb 100644
--- a/_test/pay-v3-order-app.php
+++ b/_test/pay-v3-order-app.php
@@ -25,11 +25,12 @@ try {
     $payment = \WePayV3\Order::instance($config);
 
     // 4. 组装支付参数
+    $order = (string)time();
     $result = $payment->create('app', [
         'appid'        => $config['appid'],
         'mchid'        => $config['mch_id'],
         'description'  => '商品描述',
-        'out_trade_no' => (string)time(),
+        'out_trade_no' => $order,
         'notify_url'   => 'https://thinkadmin.top',
         'amount'       => ['total' => 2, 'currency' => 'CNY'],
     ]);
@@ -38,6 +39,25 @@ try {
     echo "\n--- 创建支付参数 ---\n";
     var_export($result);
 
+    // 创建退款
+    $out_refund_no = strval(time());
+    $result = $payment->createRefund([
+        'out_trade_no'  => $order,
+        'out_refund_no' => $out_refund_no,
+        'amount'        => [
+            'refund'   => 2,
+            'total'    => 2,
+            'currency' => 'CNY'
+        ]
+    ]);
+    echo "\n--- 创建退款订单 ---\n";
+    var_export($result);
+
+    $result = $payment->queryRefund($out_refund_no);
+
+    echo "\n--- 查询退款订单 ---\n";
+    var_export($result);
+
 } catch (\Exception $exception) {
     // 出错啦，处理下吧
     echo $exception->getMessage() . PHP_EOL;
diff --git a/_test/pay-v3-order-jsapi.php b/_test/pay-v3-order-jsapi.php
index 049a8f8..a7d8569 100644
--- a/_test/pay-v3-order-jsapi.php
+++ b/_test/pay-v3-order-jsapi.php
@@ -64,6 +64,25 @@ try {
 //        'trade_state_desc' => '订单未支付',
 //    );
 
+    // 创建退款
+    $out_refund_no = strval(time());
+    $result = $payment->createRefund([
+        'out_trade_no'  => $order,
+        'out_refund_no' => $out_refund_no,
+        'amount'        => [
+            'refund'   => 2,
+            'total'    => 2,
+            'currency' => 'CNY'
+        ]
+    ]);
+    echo "\n--- 创建退款订单2 ---\n";
+    var_export($result);
+
+    $result = $payment->queryRefund($out_refund_no);
+
+    echo "\n--- 查询退款订单2 ---\n";
+    var_export($result);
+
 } catch (\Exception $exception) {
     // 出错啦，处理下吧
     echo $exception->getMessage() . PHP_EOL;
diff --git a/_test/pay-v3-order-native.php b/_test/pay-v3-order-native.php
index 68650e0..0a72d12 100644
--- a/_test/pay-v3-order-native.php
+++ b/_test/pay-v3-order-native.php
@@ -57,6 +57,25 @@ try {
 //        'trade_state_desc' => '订单未支付',
 //    );
 
+    // 创建退款
+    $out_refund_no = strval(time());
+    $result = $payment->createRefund([
+        'out_trade_no'  => $order,
+        'out_refund_no' => $out_refund_no,
+        'amount'        => [
+            'refund'   => 2,
+            'total'    => 2,
+            'currency' => 'CNY'
+        ]
+    ]);
+    echo "\n--- 创建退款订单2 ---\n";
+    var_export($result);
+
+    $result = $payment->queryRefund($out_refund_no);
+
+    echo "\n--- 查询退款订单2 ---\n";
+    var_export($result);
+
 } catch (\Exception $exception) {
     // 出错啦，处理下吧
     echo $exception->getMessage() . PHP_EOL;