In order to improve the friction and wear properties of wind turbine yaw resin-based brake sheets at high temperature,rare earth and nanomaterials were used to modify the resin-based brake sheets.The resin-based brake sheets were prepared by hot pressing process,and its mechanical properties and friction and wear tests were carried out.The friction and wear surfaces were observed and analyzed by SEM,EDS and XRD,and the mechanism of rare earth and nanomaterials on resin-based composites was investigated.The results show that the mechanical properties and tribological properties of the composites are improved by adding rare earth and nanomaterials,and 1% mass fraction of cerium oxide and yttrium oxide,and 4% nano silica can increase the friction coefficient of the composite material by 9.09% and reduce the wear rate by 64.28% at 350 ℃.Through excellent interface effect,rare earth and nano-silica improve the thermal degradation resistance of the samples at high temperatures,reduce the wear amount of the samples at high temperatures,and the wear form of the sample changes from abrasive wear to adhesive wear.