Abstract: The choices of mining methods are of subjective arbitrariness based on experiences. This paper introduces the applications of fuzzy mathematics and membership function on the mining method selection in Dongxiang Copper Mine. Membership matrix is quantitatively and qualitatively concluded by using fuzzy mathematics theory on the based on the mine's ore body occurrence characteristic and years of production experiences. We work out the relative selection matrix of each mining method with binary selection matrix and the weight matrix of each factor. The optimal mining method worked out with quantitative analysis, which is of great economic value, is consistent with the actual mining situation.