diff --git a/business/partner/purchase/mtwm/callback.go b/business/partner/purchase/mtwm/callback.go
index 047c2bc47..ca8f1dc1d 100644
--- a/business/partner/purchase/mtwm/callback.go
+++ b/business/partner/purchase/mtwm/callback.go
@@ -36,7 +36,10 @@ func OnCallbackMsg(msg *mtwmapi.CallbackMsg, msgType string) (response *mtwmapi.
 		} else if msg.Cmd == mtwmapi.MsgTypeSkuUpdate {
 			globals.SugarLogger.Debugf("-----FormData := %s", utils.Format4Output(msg.FormData, false))
 			dataMap := make([]*mtwmapi.VendorUpdateSkuCallback, 0, 0)
-			json.Unmarshal([]byte(msg.FormData.Get("retail_data")), &dataMap)
+			if err := json.Unmarshal([]byte(msg.FormData.Get("retail_data")), &dataMap); err != nil {
+				globals.SugarLogger.Debugf("-----err := %v", err)
+				return nil
+			}
 			globals.SugarLogger.Debugf("-----retail_data := %s", msg.FormData.Get("retail_data"))
 			globals.SugarLogger.Debugf("-----dataMap := %s", utils.Format4Output(dataMap, false))
 			if len(dataMap) != 0 {