Abstract: This article focused on improving the capacity of railway safety trend analysis and perfecting railway safety risk pre-control management system. Based on in-depth study on the key technologies of railway safety risk, quantitative risk assessment method, safety state evaluation model and the risk early warning model, the article put forward the construction goal, overall architecture and main function design of railway safety risk early warning information system. The practice showed that the research and application of the system could strengthen the management and ability of railway safety risk, promote railway safety management scientific.