Abstract: Based on the platform of "Fuxing" Electric Multiple Units (EMU), this paper proposed the overall architecture of the seat information display system (abbreviated as seat display system) in conjunction with the on-board passenger information system and the railway ticketing and reservation system (abbreviated as railway ticket system), analyzed the key technologies such as the research of the seat information access point, the train-ground data communication, and the data organization, and implemented the visual display of the seat information. The application of this system promotes the improvement of the intelligent level of "Fuxing" EMU and enhances the sense of gain for passengers during the journey.