diff --git a/modules/shop/core.go b/modules/shop/core.go
index a0a38818a..cc70aee9e 100644
--- a/modules/shop/core.go
+++ b/modules/shop/core.go
@@ -34,6 +34,7 @@ func randomGoods(goods []*cfg.GameShopitemData) (result *cfg.GameShopitemData) {
 func transGoods(goods []*cfg.GameShopitemData, sdata *pb.UserShopData) (result []*pb.ShopItem) {
 	result = make([]*pb.ShopItem, len(goods))
 	for i, v := range goods {
+		id := v.Key*100 + int32(i)
 		result[i] = &pb.ShopItem{
 			Gid:     sdata.Items[i].Id,
 			GoodsId: v.Key,
@@ -56,7 +57,7 @@ func transGoods(goods []*cfg.GameShopitemData, sdata *pb.UserShopData) (result [
 				N: int32(math.Ceil(float64(v1.N) * float64(v.Sale) / float64(1000))),
 			}
 		}
-		result[i].Preview = sdata.Preview[v.Key]
+		result[i].Preview = sdata.Preview[id]
 	}
 	return
 }