The cross-layered carbon fiber reinforced epoxy composites were prepared by placement/hot pressed sintering method,and the effects of tribopair materials and load on the frictional behavior of composites were investigated.The wear mechanism of composites was discussed.Results show that with the increasing of load,the friction coefficient shows downtrend,while the wear rate presents rising trend.Under the test load,the friction coefficient of the composite is low when matching with bearing steel,while the lubrication performance of the composite is poor when matching with Si3N4 and Al2O3 ceramic ball.The wear rate of the composite is higher when matching with bearing steel under low load,but the opposite under high load.The wear surface morphology analysis shows that there are some grooves and cracks on the worn surface under low load,and the main wear mechanism is abrasive wear.While under high load,delamination and cracks appear on the sliding surface,and the main wear mechanism is fatigue wear.