Control of soil and water loss in the watershed of Huangfuchuan River, Gushanchuan River, Kuyehe River and Tuweihe River is the most important things of the eco-environment construction in Main sandy Branches Watershed of the middle reaches of Yellow River. Strengthening the eco-environment construction in the above regions has an important significance and necessity for reducing the sand into Yellow River, improving the local eco-environment and the implement of the strategy of west china development. Base on the analysis on the natural characteristic and soil erosion characteristic in this region, the elementary plan, the protection target and the layout of the measures took are put forwards in this paper.