Abstract: At present, railway businesses are highly dependent on information systems. With the increasingly complex railway IT environment, it is urgent to speed up the research and development of the intelligent railway IT operation and maintenance management system in order to ensure the uninterrupted operation of key railway business systems and normal railway operation, which is aiming at fully support China Railway Information Technology Group Co. Ltd. (hereinafter referred to as: China Railway Information Center) effectively implements AI-based automated IT operation and maintenance technology. The collection, storage and processing of massive operation and maintenance data are the basis for realizing intelligent operation and maintenance. Based on the environmental evolution of railway information technology and current operation and maintenance status of railway information systems, this paper systematically classifies railway IT resources and comprehensively analyzes the operation and maintenance data acquisition requirements of various monitoring objects, thus laying a foundation for the development of intelligent railway IT operation and maintenance management system.