Abstract: Unmanned driving technology(UDT) in off-road environment is one of the important research areas in the field of intelligence in recent years.UDT in off-road environments plays an important role in promoting the development of military intelligence and improving the efficiency of industrial and agricultural production,possessing military strategic significance and civil economy value.In this paper,the research status of UDT in off-road environment was summarized from three aspects: perception and navigation positioning,path planning and motion control.The key technologies of UDT in off-road environment and the problems in the application of these technologies were described.In addition,the future research direction and focus of UDT in off-road environment were prospected.