diff --git a/qq/Recharge.php b/qq/Recharge.php
index 2323404..f59674a 100644
--- a/qq/Recharge.php
+++ b/qq/Recharge.php
@@ -46,14 +46,23 @@ class Recharge extends SmallProgram
 				$sign = $data['sign'];
 				unset($data['sign']);
 			}
+
+			$signParamer['mch_id'] = $data['mch_id'];
+			$signParamer['nonce_str'] = $data['nonce_str'];
+			$signParamer['prepay_id'] = $data['prepay_id'];
+			$signParamer['trade_type'] = $data['trade_type'];
+			if (isset($data['code_url'])) {
+				$signParamer['code_url'] = $data['code_url'];
+			}
+
 			$return = [];
-			$_sign = Help::sign($data, $config->getKey(), $config->getSignType());
+			$_sign = Help::sign($signParamer, $config->getKey(), $config->getSignType());
 			if (!isset($sign)) {
 				$return['code'] = -1;
 				$return['message'] = '返回数据签名验证失败';
-//			} else if ($sign != $_sign) {
-//				$return['code'] = -1;
-//				$return['message'] = $data['retmsg'] ?? '预支付系统错误!';
+			} else if ($sign != $_sign) {
+				$return['code'] = -1;
+				$return['message'] = $data['retmsg'] ?? '预支付系统错误!';
 			} else {
 				$return['code'] = 0;
 				$return['data'] = $data;