diff --git a/platformapi/mtwmapi/order.go b/platformapi/mtwmapi/order.go
index c24d760b..093507cd 100644
--- a/platformapi/mtwmapi/order.go
+++ b/platformapi/mtwmapi/order.go
@@ -118,7 +118,7 @@ func (a *API) OrderApplyPartRefund(orderID int64, reason string, removeSkuList [
 	_, err = a.AccessAPI("order/applyPartRefund", false, map[string]interface{}{
 		KeyOrderID:  orderID,
 		"reason":    reason,
-		"food_data": removeSkuList,
+		"food_data": string(utils.MustMarshal(removeSkuList)),
 	})
 	return err
 }
diff --git a/platformapi/mtwmapi/retail.go b/platformapi/mtwmapi/retail.go
index 0d046a12..75f41093 100644
--- a/platformapi/mtwmapi/retail.go
+++ b/platformapi/mtwmapi/retail.go
@@ -103,7 +103,7 @@ func (a *API) RetailBatchInitData(poiCode string, foodDataList []map[string]inte
 func (a *API) RetailSkuPrice(poiCode string, foodData []map[string]interface{}) (err error) {
 	_, err = a.AccessAPI("retail/sku/price", false, map[string]interface{}{
 		KeyAppPoiCode: poiCode,
-		"food_data":   foodData,
+		"food_data":   string(utils.MustMarshal(foodData)),
 	})
 	return err
 }
@@ -111,7 +111,7 @@ func (a *API) RetailSkuPrice(poiCode string, foodData []map[string]interface{})
 func (a *API) RetailSkuStock(poiCode string, foodData []map[string]interface{}) (err error) {
 	_, err = a.AccessAPI("retail/sku/stock", false, map[string]interface{}{
 		KeyAppPoiCode: poiCode,
-		"food_data":   foodData,
+		"food_data":   string(utils.MustMarshal(foodData)),
 	})
 	return err
 }
@@ -131,8 +131,8 @@ func (a *API) RetailSkuSave(poiCode, foodCode string, standardSkus, unstandardSk
 	_, err = a.AccessAPI("retail/sku/save", false, map[string]interface{}{
 		KeyAppPoiCode:     poiCode,
 		KeyAppFoodCode:    foodCode,
-		"standard_skus":   standardSkus,
-		"unstandard_skus": unstandardSkus,
+		"standard_skus":   string(utils.MustMarshal(standardSkus)),
+		"unstandard_skus": string(utils.MustMarshal(unstandardSkus)),
 	})
 	return err
 }
@@ -140,7 +140,7 @@ func (a *API) RetailSkuSave(poiCode, foodCode string, standardSkus, unstandardSk
 func (a *API) RetailSkuSellStatus(poiCode string, foodData []map[string]interface{}, sellStatus int) (err error) {
 	_, err = a.AccessAPI("retail/sku/sellStatus", false, map[string]interface{}{
 		KeyAppPoiCode: poiCode,
-		"food_data":   foodData,
+		"food_data":   string(utils.MustMarshal(foodData)),
 		"sell_status": sellStatus,
 	})
 	return err