Abstract: Withthe increasingly severe situation of network security at home and abroad, the problems related to the classified protection of railway network security are also increasing. In order to solve the problem of disunity and nonstandard of railway network security work, this article studied the railway network security level protection management system. Combined with the standard requirements of network security classified protection system 2.0, the article analyzed the requirements and architecture design of the system, formulated the filing, rectification and evaluation process. Combined with the unique business trend and management process of the railway, the worktable, account management, grading and filing, evaluation management, rectification planning, supervision and inspection, knowledge base, statistical analysis and other functions were designed. It improves the railway network security management system, and provides reference for railway units in carrying out network security management.