Weighing processing method and system

The embodiment of the invention discloses a weighing processing method and system, wherein the weighing processing method comprises the steps: the weighing processing system detects a radio frequency identification (RFID) tag on a vehicle at an entrance of a work area and then weighs the vehicle for the first time to obtain first weight, wherein an RFID logo on the RFID tag is the unique identifier of the vehicle; the weighing processing system weighs the vehicle for the second time to obtain second weight after materials are loaded to or unloaded from the vehicle; and the weighing processing system acquires an absolute value of a differential value between the first weight and the second weight to obtain the weight of the materials. According to the embodiment of the invention, the situations of mistakes, inaccuracy, corrupt practices and the like during reading, recording and calculating can be prevented when data are manually read, recoded and calculated.