When RFID is used in the retail field, it can greatly save human resources and enhance the shopping experience of buyers. The main feature of the RFID retail system is that each product is affixed with an RFID tag. When settlement, it is only necessary to put all the goods in a counter with an RFID reader. Because the reader has a group reading function, there are many commodities can be automatically settled at the same time. Meanwhile, the anti-theft door can automatically detect unsettled goods and give alarm.