diff --git a/platformapi/alipayapi/utils.go b/platformapi/alipayapi/utils.go
index 1a219b55..4faf6c3c 100644
--- a/platformapi/alipayapi/utils.go
+++ b/platformapi/alipayapi/utils.go
@@ -45,13 +45,13 @@ func (a *API) SystemAuthToken(grantType, code, refreshToken string) (tokenInfo *
 		params["refresh_token"] = refreshToken
 	}
 	// 获取证书
-	appCertSN, aliPayRootCertSN, aliPayPublicCertSN, err := SetCertSnByPath(AppCertPath, AliPayRootCertPath, AliPayPublicCertPath)
+	appCertSN, aliPayRootCertSN, _, err := SetCertSnByPath(AppCertPath, AliPayRootCertPath, AliPayPublicCertPath)
 	if err != nil {
 		return nil, err
 	}
 
 	params["app_cert_sn"] = appCertSN
-	params["alipay_public_cert_sn"] = aliPayPublicCertSN
+	//params["alipay_public_cert_sn"] = aliPayPublicCertSN
 	params["alipay_root_cert_sn"] = aliPayRootCertSN
 
 	retVal, err := a.AccessAPI("alipay.system.oauth.token", params, nil, false)