本文通过６００起重、特大交通事故中死亡６７２人的检验解剖资料，分析了道路交通事故的一般情况、交通事故与致死的关系、不同类型车辆与致伤方式与损伤部位，以及损伤部位、死亡原因与死亡时间之间的关系。在此基础上，讨论了机动车与自行车相碰、车辆碰行人事故的原因、成伤机理。同时也分析讨论了交通事故的死亡原因和死亡时间的问题。 This paper analyzes the general situation of road traffic accidents, the relationship between traffic accidents and lethality, the different types of vehicles and the ways of injury and injuries, as well as the damaged parts, and the deaths of 600 kinds of vehicles The relationship between cause and time of death. On this basis, it discusses the reason that the vehicle collides with the bicycle, the reason that the vehicle touches the pedestrian, and the mechanism of injury. It also analyzes and discusses the causes of death and the time of death in traffic accidents.