Abstract: The onboard equipment of the train operation control system is a highly integrated electronic device. To address the difficulties in its maintenance , it is proposed to introduce fault prediction and health management (PHM) technology into its maintenance. Based on the concept of equipment lifecycle management, this article proposes an PHM implementation scheme of train control on-board equipment. Through integrating equipment functional requirements with maintenance requirements, the research and development of PHM system for train control on-board equipment is coordinated with the upgrading and renovation of train control on-board equipment. After the upgrading and renovation of train control on-board equipment and the construction of data processing and analysis systems, the health assessment system for train control on-board equipment is built on the basis of improving the BIT and data acquisition functions of train control on-board equipment. Then, a implementation plan is formulated to steadily promote the development of related equipment and the construction of those systems. With the support of the health assessment system for train control on-board equipment, the maintenance support departments can work efficiently and collaboratively and enable closed-loop management of fault disposal, pushing forward the maintenance of onboard train control equipment to shift to On-Condition maintenance mode.