Guizhou is a province of karst developing very avidly and intensely, soil erosion intensity and dangerousness of potentiality are very strong.Recently，the present condition of soil erosion is speeding up, and flood disaster takes place frequently, it enhances the request of soil and water conservation work.The authorn investigated soil erosion and analyzed its spatial changeable by GIS and remote sensing technique in Guizhou province.Meantime,completing way of science and technology，it is going to provide dependable data for soil erosion preventing and ecological environment managing.