In the low一hill areas of loess plateau in eastern Qinghai province, the serious accele rated soil erosion has caused many crucial problems such as the imblance of ecosystem, the unsteady developing of agriculture and the slow advancing of economics.And then, people in those areas have been plunged into poverty.It is proved by practices, that the effective measures to prevent accelerated soil erosion are controlling mountains, rivers, farmland, forests and roads in a comprehensive way.Thus, the condition in those areas could be completely improved, the soil and water loss could be controlled, and the land productivity could be developed.