This paper presents the approaches and principles for building Fuzzyanalysis model of soil erosion intensity in hills and gullies of loess regions.Withthe theories of Fuzzy Subset

the author builds the attribute function of soil ero-sion intensity

and designs the computing table for soil erosion intensity Using thecomputing table

the author obtains the indexes of soil erosion intensity and gradesand classsifies the intensity of soil erosion with the principles of Fuzzy compatibi-lity degree.With the model the author makes the test researches on soil erosion inAnsai County

north of Shanxi Province。The test results show that the model hasa high prediction precision

and can objectively reflect the dynamic states of soilerosion intensity in loess regions。