diff --git a/app/third/paymentService/ali_service.go b/app/third/paymentService/ali_service.go
index 186199e..8829dcb 100644
--- a/app/third/paymentService/ali_service.go
+++ b/app/third/paymentService/ali_service.go
@@ -98,7 +98,7 @@ func ALiH5PayInfo(c context.Context, payOrderRequest PayOrderRequest) (string, e
 
 // ALiCallBack	支付宝支付回调
 func ALiCallBack(notifyReq gopay.BodyMap, aliConfig AliPay) error {
-	ok, err := alipay.VerifySignWithCert(aliConfig.AlipayPublicCert, notifyReq)
+	ok, err := alipay.VerifySignWithCert([]byte(aliConfig.AlipayPublicCert), notifyReq)
 	if !ok || err != nil {
 		return err
 	}