Abstract: Resin-based friction material samples were prepared by using Si C with different particle sizes. The mechanical properties and microstructure of the samples were characterized by AG-100 KN universal testing machine and scanning electron microscope（SEM）, respectively. The friction and wear properties were studied by MM-3000 friction and wear test-bed. The results show that the smaller Si C particle size is more conducive to improving the density and tensile strength of resin based friction materials. When the particle size is +60 mesh size, the average friction coefficient exhibits the best performance under different working conditions, and the surface of the sample after friction is relatively smooth.