Abstract: Intelligentization is the development trend of the high-speed railway traction power supply system in the future, but related technologies have not been widely used currently. The traditional traction power supply system still has problems such as disorganized data collection, and lacking of information sharing. This paper studied the overall architecture and characteristics of intelligent traction power supply systems, analyzed the key technologies and solutions for intelligent traction power supply related facilities, aiming at the transformation of the signal acquisition and transmission mode of the system, proposed the test and evaluation method for the system. It has a certain reference function for the construction and acceptance of the intelligent traction power supply system.