Abstract: Environmental impact assessment and environmental impact statement are single factor assessment that take the mine exploitation as single construction project and lay stress on pollutant emission and simple quantitative analysis.The paper considers the mine exploitation as the unified system,takes into consideration of potential and long term impact on natural environment in mine and its neighboring area imposed by geotechnical projects such as mining,spoil ground,tailing dam and hazardous matters generated by rock oxidization and lezching.The paper proposes to establish the index system of the environmental impact assessment in mine geotechnical system to change the traditional mode of environmental impact assessment,standardize and supervise the mining activity and realize the coordinated development of mining and environmental protection.