Based on introducing the surface mine soil and water loss in Tiefeng mountain of Anxi county, Fujian province, it is analyzed and discussed how to forecast the amount of soil and water loss by catchment unit where there are surface mines in it, then the perfect result is obtained and it is used in fact successfully. On the basis of these, it is suggested that the technique way to control soil and water loss of surface mine, which is forecast the amount of surface mine not only focus on mine area, but also on comprehensive estimate the whole catchment, as well as integral control the whole catchment instead of control mine area itself.