diff --git a/platformapi/tbunionapi/sku.go b/platformapi/tbunionapi/sku.go
index 57c84c67..2e4db128 100644
--- a/platformapi/tbunionapi/sku.go
+++ b/platformapi/tbunionapi/sku.go
@@ -57,64 +57,68 @@ type MaterialOptionalParam struct {
 	Q        string `json:"q,omitempty"`
 	PageNo   int    `json:"page_no,omitempty"`
 	PageSize int    `json:"page_size,omitempty"`
-	Sort     int    `json:"sort,omitempty"`
-	Cat      string `json:"cat,omitempty"`
+	Sort     string `json:"sort,omitempty"`
 }
+
 type MaterialOptionalResult struct {
-	CategoryID           int      `json:"category_id"`
-	CategoryName         string   `json:"category_name"`
-	CommissionRate       string   `json:"commission_rate"`
-	CommissionType       string   `json:"commission_type"`
-	CouponAmount         string   `json:"coupon_amount,omitempty"`
-	CouponEndTime        string   `json:"coupon_end_time,omitempty"`
-	CouponID             string   `json:"coupon_id"`
-	CouponInfo           string   `json:"coupon_info"`
-	CouponRemainCount    int      `json:"coupon_remain_count"`
-	CouponShareURL       string   `json:"coupon_share_url,omitempty"`
-	CouponStartFee       string   `json:"coupon_start_fee,omitempty"`
-	CouponStartTime      string   `json:"coupon_start_time,omitempty"`
-	CouponTotalCount     int      `json:"coupon_total_count"`
-	IncludeDxjh          string   `json:"include_dxjh"`
-	IncludeMkt           string   `json:"include_mkt"`
-	InfoDxjh             string   `json:"info_dxjh"`
-	ItemDescription      string   `json:"item_description"`
-	ItemID               int64    `json:"item_id"`
-	ItemURL              string   `json:"item_url"`
-	LevelOneCategoryID   int      `json:"level_one_category_id"`
-	LevelOneCategoryName string   `json:"level_one_category_name"`
-	Nick                 string   `json:"nick"`
-	NumIid               int64    `json:"num_iid"`
-	PictURL              string   `json:"pict_url"`
-	PresaleDeposit       string   `json:"presale_deposit"`
-	PresaleEndTime       int      `json:"presale_end_time"`
-	PresaleStartTime     int      `json:"presale_start_time"`
-	PresaleTailEndTime   int      `json:"presale_tail_end_time"`
-	PresaleTailStartTime int      `json:"presale_tail_start_time"`
-	Provcity             string   `json:"provcity"`
-	RealPostFee          string   `json:"real_post_fee"`
-	ReservePrice         string   `json:"reserve_price"`
-	SellerID             int64    `json:"seller_id"`
-	ShopDsr              int      `json:"shop_dsr"`
-	ShopTitle            string   `json:"shop_title"`
-	ShortTitle           string   `json:"short_title"`
-	SmallImages          []string `json:"small_images"`
-	SuperiorBrand        string   `json:"superior_brand"`
-	Title                string   `json:"title"`
-	TkTotalCommi         string   `json:"tk_total_commi"`
-	TkTotalSales         string   `json:"tk_total_sales"`
-	URL                  string   `json:"url"`
-	UserType             int      `json:"user_type"`
-	Volume               int      `json:"volume"`
-	WhiteImage           string   `json:"white_image"`
-	XID                  string   `json:"x_id"`
-	ZkFinalPrice         string   `json:"zk_final_price"`
+	ResultList []struct {
+		CategoryID           int      `json:"category_id"`
+		CategoryName         string   `json:"category_name"`
+		CommissionRate       string   `json:"commission_rate"`
+		CommissionType       string   `json:"commission_type"`
+		CouponAmount         string   `json:"coupon_amount,omitempty"`
+		CouponEndTime        string   `json:"coupon_end_time,omitempty"`
+		CouponID             string   `json:"coupon_id"`
+		CouponInfo           string   `json:"coupon_info"`
+		CouponRemainCount    int      `json:"coupon_remain_count"`
+		CouponShareURL       string   `json:"coupon_share_url,omitempty"`
+		CouponStartFee       string   `json:"coupon_start_fee,omitempty"`
+		CouponStartTime      string   `json:"coupon_start_time,omitempty"`
+		CouponTotalCount     int      `json:"coupon_total_count"`
+		IncludeDxjh          string   `json:"include_dxjh"`
+		IncludeMkt           string   `json:"include_mkt"`
+		InfoDxjh             string   `json:"info_dxjh"`
+		ItemDescription      string   `json:"item_description"`
+		ItemID               int64    `json:"item_id"`
+		ItemURL              string   `json:"item_url"`
+		LevelOneCategoryID   int      `json:"level_one_category_id"`
+		LevelOneCategoryName string   `json:"level_one_category_name"`
+		Nick                 string   `json:"nick"`
+		NumIid               int64    `json:"num_iid"`
+		PictURL              string   `json:"pict_url"`
+		PresaleDeposit       string   `json:"presale_deposit"`
+		PresaleEndTime       int      `json:"presale_end_time"`
+		PresaleStartTime     int      `json:"presale_start_time"`
+		PresaleTailEndTime   int      `json:"presale_tail_end_time"`
+		PresaleTailStartTime int      `json:"presale_tail_start_time"`
+		Provcity             string   `json:"provcity"`
+		RealPostFee          string   `json:"real_post_fee"`
+		ReservePrice         string   `json:"reserve_price"`
+		SellerID             int64    `json:"seller_id"`
+		ShopDsr              int      `json:"shop_dsr"`
+		ShopTitle            string   `json:"shop_title"`
+		ShortTitle           string   `json:"short_title"`
+		SmallImages          []string `json:"small_images"`
+		SuperiorBrand        string   `json:"superior_brand"`
+		Title                string   `json:"title"`
+		TkTotalCommi         string   `json:"tk_total_commi"`
+		TkTotalSales         string   `json:"tk_total_sales"`
+		URL                  string   `json:"url"`
+		UserType             int      `json:"user_type"`
+		Volume               int      `json:"volume"`
+		WhiteImage           string   `json:"white_image"`
+		XID                  string   `json:"x_id"`
+		ZkFinalPrice         string   `json:"zk_final_price"`
+	} `json:"result_list"`
+	TotalResults int    `json:"total_results"`
+	RequestID    string `json:"request_id"`
 }
 
 //物料搜索
-func (a *API) MaterialOptional(param *MaterialOptionalParam) (activityInfoGetResult []*MaterialOptionalResult, err error) {
+func (a *API) MaterialOptional(param *MaterialOptionalParam) (activityInfoGetResult *MaterialOptionalResult, err error) {
 	result, err := a.AccessAPI("taobao.tbk.dg.material.optional", false, utils.Struct2FlatMap(param))
 	if err == nil {
-		utils.Map2StructByJson(result["result_list"], &activityInfoGetResult, false)
+		utils.Map2StructByJson(result, &activityInfoGetResult, false)
 	}
 	return activityInfoGetResult, err
 }
diff --git a/platformapi/tbunionapi/sku_test.go b/platformapi/tbunionapi/sku_test.go
index 637c975c..4ddb3d7d 100644
--- a/platformapi/tbunionapi/sku_test.go
+++ b/platformapi/tbunionapi/sku_test.go
@@ -18,7 +18,7 @@ func TestMaterialOptional(t *testing.T) {
 		AdzoneID: 111339100149,
 		PageNo:   1,
 		PageSize: 10,
-		Cat:      "",
+		Q:        "泡椒",
 	})
 	if err != nil {
 		t.Fatal(err)