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.