Classification of soil erosion is an important topic in soil and water conservation.Since the classification standards,such as obvious demarcation lines,choice of factors,determination of weights,and the degree and range of soil erosion,are fuzzy,classification of soil erosion evaluation model is made by matter element analysis based on the subject function of fuzzy.Moreover,the specific application of the model is introduced in contrasting with fuzzy comprehensive evaluation model and actual examples.Results show that the model is rational and feasible.