diff --git a/bid.go b/bid.go
index d7ed034..9c10b14 100644
--- a/bid.go
+++ b/bid.go
@@ -1,5 +1,7 @@
 package dw_sdk
 
+import "strconv"
+
 type BiddingType int8
 
 const (
@@ -7,3 +9,8 @@ const (
 	BiddingType_Consign      BiddingType = 5 //闪电直发
 	BiddingType_Fast_PreSale BiddingType = 8 //急速预售
 )
+
+func LoadBiddingType(s string) BiddingType {
+	i, _ := strconv.Atoi(s)
+	return BiddingType(i)
+}