Effects of eco-environmental construction projects on soil and water loss from 2000to 2009were studied by taking the Huangshui River basin as the study area.Landsat TM/ETM data of 2000and 2009 were used to derive the data of land cover and vegetation in combination with the Aster DEM.The study was conducted by the“Standards for Classification and Gradation of Soil Erosion” (SL190-2007)and with the support of GIS techniques.Results showed that soil erosion on slope in the Huangshui River basin was reduced somewhat in the last ten years.The intermediate and above soil erosion in 2009was reduced by 309.11km² as compared with that in 2000,but gully erosion tended to increase,with a net increase of 706.87km².This illustrates that the engineering measures are effective to soil erosion on slope,but insignificant to gully erosion.