First, the radio frequency identification technology RFID has been widely used in our daily life, related applications such as: pet chip, car anti-theft lock, access control card, MRT leisure card. Second, in recent years, driven by the mandatory policies of the world's largest retailer Wal-Mart and the US National Defense, the promotion of RFID has been booming. RFID has become a popular fried chicken in the industry. Many countries also regard RFID as the star of the future and have begun to be widely used in the private industry and defense military This paper introduces RFID in a comprehensive way by taking into account the depth and breadth, as well as the technology and practice-oriented approach. It is hoped that the general personnel and technology developers of the national army can be inspired.