Abstract: Through analyzing the current application status of domestic Passenger Transport Management Information System, combining with the physical truth of railway passenger transport, this article proposed the overall architecture design of China Railway Passenger Transport Management Information System based on SOA, analyzed the overall architecture, business architecture and logical architecture, explained the advantages of the overall architecture of the System based on SOA. The key technologies were summarized and analyzed comprehensively, it also has certain practical significance to the deep research, development and subsequent upgrades of the System.