Abstract: Aiming at the real-time detection requirements of on-board equipment and components, this paper designed a urban rail transit vehicle and equipment condition monitoring system which was composed of detection terminal, on-board wireless network and remote server. The paper used wireless communication technology and network communication protocols such as HTTP to implement real-time wireless remote detection and monitoring of temperature, position and other sensor parameters, as well as data storage and intelligent processing. The successful application of the system in urban rail transit vehicles shows that: the successful transmission ratio of effective data is positively related to the vehicle Wi-Fi network coverage and the mobile communication signal status of the operation line; the vehicle real-time positioning function meets the requirements of vehicle monitoring and management; the temperature monitoring of vehicle running gear implements the real-time monitoring, fault alarm and early warning of running gear components and other functions, improve the efficiency of vehicle maintenance.