Abstract: The natural disasters and aberrant invasion and limitation monitoring system in high-speed railway(abbrevia-tion: disaster monitoring system) is one of the important basic safeguard systems for the safety of high-speed railway. The disaster monitoring system has been implemented in the constructed high-speed railway. In order to make users notice and solve the alarm information of the system anytime and anywhere, improve the working efficiency of the users, solve the problem of timeliness of the system, this article researched and designed the mobile terminal of the disaster monitoring system. Combined with IOS development technology of X-Code, React Native, Ajax, and so on, the article designed the structure, function, data processing flow of the terminal. The experiment results show that the mobile terminal of the disaster monitoring system improves the timeliness of information and the ability of quickly disposing the problems. It provides the technology reserve for the development of mobile terminal.