Abstract: To solve the problems of the long time consuming for remaining ticket inquiry on large screens, the slow response of remaining ticket inquiry requests on station ticketing windows and automatic ticket vending machines in some railway stations in China, this paper used fast query, distributed cache, multi-dimensional fault detection, distributed memory database and other technologies to design and develop a remaining ticket inquiry service system for railway station with high reliability, high availability and expansibility. The system has been applied in the ticketing window, automatic ticket vending machine, station screen of the China’s railway station, as well as the centralized telephone ticketing and reservation system, the operation effect is good.