Infrared inspection vehicle consists of a railroad coach and dynamic detection device installed on the coach body.Dynamic detection device mainly includes simulated wheels,simulated axle box,probe orientation ruler,temperature control module,wireless transmission,GPS module and detection computer,etc.Statistical analysis of infrared detection vehicle and testing equipment of common failures,the performance of common failures to record the summary,the common fault detection and maintenance of research and discussion,so as to guide the work process of rapid fault judgment,and then targeted on the infrared detection vehicle for regular inspection and maintenance is an important means to ensure the safety of railroad operations.