As one of the most serious ecological problem in China, soil erosion has attracted extensive attention.Currently,the RUSLE model and GIS technology are commonly used to estimate rainfall and runoff erosion.This study introduced the theory of security patterns(SPs)into the estimation of soil erosion based on RULSE and GIS,and then constructed a risk pattern of soil erosion for Diebu County in Gansu Province.The risk pattern proposed a series of specific solutions targeting the soil erosion, such as transforming slopes into terraces,enhancing the protection of slopes,increasing the vegetation coverage in the key point or zone in the risk pattern and so on.These methods would help enhance fragmentation of erosion patches,decrease erosive power of surface runoff, and weaken the scale-effect of erosion, and eventually decrease or solve the soil erosion problem. Besides,the risk pattern could also be used to guide the reform and change of land use patterns.