Rail transit is becoming the first choice for passengers thanks to its features of fast speed,punctuality and large capacity.With the continuous increase of passengers,more ticket gates are needed for their entry and exit at the station.However,due to the restraint of the civil construction conditions at the station,it is not possible to add ticket gates on a large scale.This paper studies the technical characteristics of Radio Frequency Identification(RFID),and considers the construction situation of automatic fare collection systems in rail transit.On this basis,it proposes a solution for barrier-free fast ticket checking system in stations based on the RFID and face recognition technologies.The proposed solution can achieve"senseless"entry and exit of subway passengers at the station,by allowing them to enter and leave the station without using the travel card,which improves the quality of passenger service.