Remote sensing investigation shows that soil erosion area is about 4.1911 million square kilometers for twelve provinces of the west region of China. It is 86.86% of the total soil erosion area of China and 62.31% of total area of west region. It has been the crucial factor to limit the sustainable development of society and economy in the west region. Soil erosion destroys land resource, reduces soil fertility, limits grain increase production, affects water resource envi ro nment , and causes disaster a nd ecology environment imbalance,etc. . It is suggested that some prev ention countermeasures for treating soil erosion, should been token in order to reduce harms of soil erosion to the lowest level