An evaluation method of high friction coefficient composite brake shoe performance of locomotive brake based on fuzzy soft set theory was proposed.First,the evaluation index set was divided into several subsets,then a subset of the elements was combined to make the evaluation parameters expand.Finally,the evaluation information was fused with the soft set operation rule to conclude the comprehensive performance evaluation results of composition brake shoe.This method can effectively improve the resolution of the decision,and make the evaluation results more accurate and reliable.Through the performance evaluation of 4 kinds of high friction coefficient synthetic brake shoes used more in our country at present,the feasibility of the evaluation method is confirmed.