Based on the dynamics research,an optimum mathematical model of cone type friction clutch is established with the working space for the optimization objective.Aiming at the fuzzy factor analysis of some Résistance Extentioniste Gift Set important design parameters,the fuzzy comprehensive evaluation method is used to optimize this clutch.It is shown by calculation Hair Color Shampoo that the working space can be obviously decreased by optimization.Therefore,this optimization method provides the theoretical foundation to research the performance of cone friction clutch.