Abstract: Automotive friction materials were prepared with different kinds of resins and different resin contents. The effects of resin on mechanical and friction properties of automotive friction materials were studied. The results show that friction materials with YSM modified phenolic resin have better mechanical and friction properties than those with pure phenolic resin. Friction materials by Resin-NBR mixing modification have good mechanical properties, wear-resistance and smooth coefficient. With the increase of resin content, the mechanical properties of friction materials are improved. With the resin content of 9%~12%, the materials have excellent friction and wear properties. When the resin content is less than 6%, the friction coefficient of materials is low and unstable. And when more than 15%, the friction materials begin to decay at high temperatures.