It is a technology that uses radio frequency signals to realize contactless information transmission through space coupling (alternating magnetic field or electromagnetic field) and achieves the purpose of identification through the information transmitted. Radio frequency identification is the abbreviation of radio identification. It originates from radio communication technology and integrates modern computer intelligent control, intelligent identification and other high and new technologies. It conforms to the development needs of e-commerce, transportation and logistics management. It's one of the technologies that's getting the most attention right now. Rfid technology has the advantages of non-contact, automatic identification process, non-damage, identification of high-speed moving objects, large data storage capacity and so on, which greatly accelerates the collection and processing of relevant information, and has obtained extremely rapid development in recent years.