Abstract: With the development of railway industry in our country, railway business mileage is getting longer, operation speed is faster and faster, and the density of railway network is increasing, the safety of railway operations is of particular importance. In order to trace the reasons of railway traffic accidents from the source, the causes were analyzed from various dimensions such as accidents types, railway transportation specialty types, and cause categories. The results show that the causes of railway traffic accidents can be comprehensively analyzed in this method, and the investigation points of accidents can be determined according to different causes of accidents, so as to provide reference for the railway industry regulatory authorities.

Key words: railway traffic accident, multidimensional analysis model, cause analysis, accident investigation, derailment