diff --git a/src/AKSRT/Payment/Gateways/AlipayGateway.php b/src/AKSRT/Payment/Gateways/AlipayGateway.php
index d0c2d403..1246e15d 100644
--- a/src/AKSRT/Payment/Gateways/AlipayGateway.php
+++ b/src/AKSRT/Payment/Gateways/AlipayGateway.php
@@ -249,7 +249,7 @@ class AlipayGateway implements \AKSRT\Payment\GatewayInterface {
 			YansongdaPayFactory::boot_alipay();
 			$params = ['out_request_no' => $request_id, '_action' => 'refund'];
 			if ($order_number !== '') {
-				$params['out_trade_no'] = $order_number;
+				$params['out_trade_no'] = $this->resolve_out_trade_no($order_number);
 			}
 			$result = Pay::alipay()->query($params);
 			$data = YansongdaPayFactory::to_array($result);