Abstract: Based on the relative membership degree and function,the model of multiclassification fuzzy pattern recognition is applied in assessment of mine geoenvironment quality,which counteracts the defects of maximum membership degree law and makes it easier to calculate the relative membership degree and function.The assessment model of geoenvironment quality was established and used to assess the mine geoenvironment quality of Xiaoqinling field.The results indicates that the method is feasible and reliable.