Abstract: The train list reporting system is one of the core subsystems of the railway transportation management information system. In order to reinforce railway cyber security and respond to the requirements of independent technological innovation, China Railway Group has implemented an all-aroundlocalization transformation of the train list reporting system, including adaptive maintenance of its back-end application programs, which mainly receive, forward, and store train list data, and complete data exchange with other information systems, directly determining the reliability and performance of the train list reporting system as well as the stable operation of related information systems. Based on the architecture of the train list reporting system and the selection of demestic IT products for localization transformation, this article comprehensively analyzes the relevant impact of localization transformation of the system on its back-end application programs, determined the scope of adaptive maintenance of the back-end application programs, developed a testing plan and built testing environments, and tested the functionality and performance of the changed back-end application programs to ensure that the programs can run stably, complete normal data exchange with other related information systems,and keep the degradation of system performance within an acceptable range. The solutions proposed in this article have commonalities and have certain reference value for the localization transformation of information systems in the transportation industry and other industries.