diff --git a/modules/hero/api_buy.go b/modules/hero/api_buy.go
index dcd6e13e4..62f9009cb 100644
--- a/modules/hero/api_buy.go
+++ b/modules/hero/api_buy.go
@@ -72,7 +72,7 @@ func (this *apiComp) Buy(session comm.IUserSession, req *pb.HeroBuyReq) (code pb
 		return
 	}
 
-	for i := record.Onebuy; i < req.BuyCount; i++ {
+	for i := totalCount - req.BuyCount; i < totalCount; i++ {
 
 		if i >= int32(len(price)) {
 			totalCost += float64(price[len(price)-1]) / 1000