diff --git a/daxpay-single/daxpay-single-service/src/main/java/cn/daxpay/single/service/core/channel/alipay/service/AliPayConfigService.java b/daxpay-single/daxpay-single-service/src/main/java/cn/daxpay/single/service/core/channel/alipay/service/AliPayConfigService.java
index ef77d9b6f..b23929a0b 100644
--- a/daxpay-single/daxpay-single-service/src/main/java/cn/daxpay/single/service/core/channel/alipay/service/AliPayConfigService.java
+++ b/daxpay-single/daxpay-single-service/src/main/java/cn/daxpay/single/service/core/channel/alipay/service/AliPayConfigService.java
@@ -112,6 +112,7 @@ public class AliPayConfigService {
         config.setSignType(aliPayConfig.getSignType());
         // 证书
         if (Objects.equals(aliPayConfig.getAuthType(), AliPayCode.AUTH_TYPE_CART)){
+            config.setPrivateKey(aliPayConfig.getPrivateKey());
             config.setAppCertContent(aliPayConfig.getAppCert());
             config.setRootCertContent(aliPayConfig.getAlipayRootCert());
             config.setAlipayPublicCertContent(aliPayConfig.getAlipayCert());