Abstract: The paper discusses the present situation facing the prevention and control of geological hazards and construction of the early-warning system in China.Through the implementation of the principle of taking men as the basis,putting stress on prevention and combining prevention with treatment ,a geologi-cal hazard prevention and control system with China's distinctive characteristics has been formed and popu-larized in China.The core of this system is the construction of an early-warning system.It includes the following content :investigation and zoning of geological hazards in geological hazard prone areas,risk as-sessment of geological hazards in respect to the land use for construction and monitoring and early warning of geological hazards.In addition,the author compares the work of prevention and control of geological hazards in China and that in other countries and looks forward to the future trend of the work.