diff --git a/app/third/youchu/youchu_api.go b/app/third/youchu/youchu_api.go
index 8a51f17..372774b 100644
--- a/app/third/youchu/youchu_api.go
+++ b/app/third/youchu/youchu_api.go
@@ -286,7 +286,7 @@ func DecryptResponse(response string, isRequest bool) (Rsponse string) {
 	var MerchantId, PrivateKey, PublicKey string
 	if isRequest {
 		MerchantId = config.GetConf().YouChuCallBack.MerchantId
-		PrivateKey = config.GetConf().Sm2.PrivateKey
+		PrivateKey = config.GetConf().YouChuCallBack.PrivateKey
 		PublicKey = config.GetConf().YouChuCallBack.SopPublicKey
 	} else {
 		MerchantId = config.GetConf().YouChu.MerchantId