diff --git a/server/marketserver/api/v1/shopcart/shopcart.go b/server/marketserver/api/v1/shopcart/shopcart.go
index 87752323..a10bca59 100644
--- a/server/marketserver/api/v1/shopcart/shopcart.go
+++ b/server/marketserver/api/v1/shopcart/shopcart.go
@@ -121,6 +121,12 @@ func (this *ShopCartApi) Add(c *gin.Context) {
 		c.JSON(200, rspObj)
 		return
 	}
+	if len(reqJson.Tokens) > constant.SHOPCART_MAX_GOODS_NUM {
+		rspObj.ErrCode = 2
+		rspObj.ErrMsg = "token len error"
+		c.JSON(200, rspObj)
+		return
+	}
 
 	f5.GetGoStyleDb().OrmSelectOne(
 		constant.BCNFT_DB,
diff --git a/server/marketserver/common/types.go b/server/marketserver/common/types.go
index e503567e..376866f6 100644
--- a/server/marketserver/common/types.go
+++ b/server/marketserver/common/types.go
@@ -4,6 +4,7 @@ import (
 	"q5"
 	"f5"
 	"fmt"
+	"main/constant"
 )
 
 type NftHomeMeta struct {
@@ -127,6 +128,19 @@ func (this* ShopCart) GetGoods(netId int32, contractAddress string, tokenId stri
 }
 
 func (this* ShopCart) DeleteExcessData() {
+	q5.Sort[ShopCartGoods](this.Goods,
+		func (a *ShopCartGoods, b *ShopCartGoods) bool{
+			return a.SortIdx > b.SortIdx
+		})
+	newGoods := []*ShopCartGoods{}
+	for _, val := range this.Goods {
+		if len(newGoods) < constant.SHOPCART_MAX_GOODS_NUM {
+			q5.AppendSlice(&newGoods, val)
+		} else {
+			break
+		}
+	}
+	this.Goods = newGoods
 	q5.Sort[ShopCartGoods](this.Goods,
 		func (a *ShopCartGoods, b *ShopCartGoods) bool{
 			return a.SortIdx < b.SortIdx