The project is the key content of the National Development and Reform Commission's Urban Rail Transit Innovation Capacity Building Project, mainly through the construction of four comprehensive test platforms, such as electromagnetic braking system, power supply and current collection system, hybrid power system and transmission system, to fill the blank of test and verification conditions in the field of rail transit in China and build a relatively complete system. System and international advanced national rail transit system engineering laboratory. Through the implementation of the project, the technical bottleneck of urban rail transit test verification in China is further broken through, and a unified and perfect test standard system suitable for the characteristics of urban rail transit in China is formed.