Abstract: This article analyzed the present situation and application requirements of Truck Performance Detection System (TPDS), put forward the overall design scheme of TPDS optimization and in-depth applicationin four aspects, such as optimized system architecture, networked forecast application pattern, optimized network alarming evaluation and treatment rules, improved system functions. The article also given a detailed description for the key techniques of the system. The pilot application showed that the System implemented the networked forecast closed-loop management to the alarming vehicle, improved the comprehensive utilization value of alarming information, reduced the amount of field operations on the basis of the vehicle safety, met the deeply application requirements of railway vehicle users.