Abstract: There exist many geological hazards and geo-environmental problems in the new urban site area of Badong in the reservoir area of Three gorge project.On the basis of investigation of geological background,in which ancient landslide is the most sensitive to slope failure.The stability of Huangtupo ancient landslide,Zhaoshuling ancient landslide etc.was studied in detail in consideration of the combining effect of reservoir impounding,rainfall, and man-induced infiltration.The river bank erosion was estimated on a schematic model and from the parameters obtained in the in-situ investigation. According to the main geo-environmental factors affecting urban development and their subordinating functions in land use,a microzonation of land use of the planned urban area of Badong was done by using fuzzy-comprehensive discrimination.