To improve the high temperature friction and wear properties and the stability of friction coefficient of friction materials at high temperature,the formulation of various fiber reinforced phenolic resin based friction materials was optimized by orthogonal test.Through range analysis,the influence of various fibers and content on the performance of friction materials and the wear mechanism of friction materials were discussed.It is shown that hybrid fiber reinforced resin-based friction materials have excellent wear resistance.The ceramic fiber has high hardness and can be evenly distributed in the resin matrix after being dispersed and mixed,which has the greatest impact on the hardness,internal shear strength and friction coefficient of the phenolic resin friction material.The carbon fiber has the characteristics of high temperature resistance,wear resistance and self-lubrication,and its content change has the greatest impact on the wear rate of phenolic resin friction materials.At high temperatures,the carbon fiber has a more significant impact on the wear rate.It is gradually worn during the friction process and distributed to the whole friction surface,which can significantly reduce the material wear rate.The difference in fiber content causes the change of wear mechanism,and the main wear forms of the friction material are abrasive wear,thermal wear,fatigue wear and adhesive wear.