As a part of passenger transportation system software, the wireless ticket check-in system overcomes the shortcomings of a traditional ticket checking system’s fixed check-in. Holding the wireless ticket-examination terminals in hands, the depot staff is able to make the ticket-examination operation in any depot positions and the passenger trains, enormously facilitating the station business management. The concrete function includes: the examination of tickets, the tickets check-in information and the number of orders information inquiry.