Abstract：It is difficult to select refuse landfill sites in karst areas and the present assessment method of refuse landfill site selection has many limitations. Therefore an improved assessment method of refuse landfill site selection is presented by the authors according to the construction purpose and basic principle of refuse landfill site selection, combined with the geo-environmental characteristics in karst areas. Its applications indicate that more suitable refuse landfill sites can be selected by this method in karst areas where refuse landfill sites are difficult to select by using the present method, and that the method is capable of solving the difficult problems of refuse harmlessness and reduction in karst areas.