The system automatically acquire and analyzes images of running parts of EMUs, brake fittings, undercarriage suspensions, hook connections, side skirts, bogies, treads, rims, etc., and performs graded alarm to abnormal images. It is used to improve the detection and abnormal early warning of the state of parts of high-speed EMUs on long-distance roads and stations, improve the quality of maintenance, inspection and repair operations of vehicle working groups.