In order to improve the stability of solid lubricated composite coating under high temperature,carbon nanofibers (CF) were added to optimize the performance of MoS2 coating.Coatings with different proportions of powder were prepared on aluminum alloy substrate.The stability and wear resistance of the coating were studied at different experimental temperatures with the help of CFT-I high-speed reciprocating friction and wear tester.The wear scar morphology of the coating surface was observed by using the ultra depth of field microscope system,and the wear mechanism was analyzed.The results show that when the temperature is 20 ℃ to 100 ℃,the temperature has little effect on the overall performance of the coating,and the friction coefficient of the coating increases first and then decreases,while the wear scar depth is opposite with the increase of CF mass fraction.When the CF mass fraction is 1.5%,the coating has the maximum friction coefficient and the minimum wear scar depth.When the temperature is 200 ℃,the friction coefficient of the coating increases and the depth of wear scar increases significantly with the increase of CF mass fraction,and different CF mass fractions have significant effects on the depth of wear scar.The addition of CF can form a network skeleton structure in the coating,and can stabilize the coating structure and transferring heat,so the coatings show good heat resistance and wear resistance.At 200 ℃ high temperature,when the CF mass fraction is 1.5%,the wear area and coating furrow height are reduced by 21.6% and 24.6% respectively compared with the coating without CF,showing better heat resistance and wear resistance.