diff --git a/pkg/multicloud/aliyun/charge.go b/pkg/multicloud/aliyun/charge.go
index 13e6043203..d7e7a86dbf 100644
--- a/pkg/multicloud/aliyun/charge.go
+++ b/pkg/multicloud/aliyun/charge.go
@@ -27,7 +27,7 @@ func convertChargeType(ct TChargeType) string {
 	case PostPaidInstanceChargeType, PostPaidDBInstanceChargeType:
 		return api.BILLING_TYPE_POSTPAID
 	default:
-		return api.BILLING_TYPE_PREPAID
+		return ""
 	}
 }