Abstract: The construction of the railway master data management platform was built to solve the problem that the railway system was built with independent and repeat period, the basic core data was not unified, the system could not be interconnected. This article provided the design ideas and implementation methods in detail for the master data specification, lifecycle management, data comprehensive analysis, quality management of railway master data and other key technologies during the process of platform construction. This had a reference for the gradual improvement railway master data platform construction.