A new comprehensive evaluation system of tribology for wet friction materials was established based on Fuzzy Mathematics,which includes many indexes such as dynamic friction coefficient,friction stability,wear rate and total friction performance.The friction performances of four kinds of wet friction materials were investigated on the friction test machine,and the experimental data were obtained through scanning electron microscope and other equipment.The friction performances of the carbon fabric reinforced resin-based friction materials were evaluated by the comprehensive evaluation system of tribology.The evaluation result by the comprehensive evaluation system of tribology is consistent with the test result,which proves the feasibility of this comprehensive evaluation system of tribology.