DLC，CrN and TiN coatings were deposited on silicon(111)and 316L stainless steel substrates by magnetron sputtering respectively to improve the antiwear ability of the friction pair in glycerol environment.Comparative studies on friction and wear properties of the coating samples in atmosphere and glycerin environment were conducted by using multifunction friction and wear tester.The variation of friction coefficient,wear rate and wear scar morphology were analyzed.Further analysis of the friction and wear properties of different friction pairs of coatings in glycerol environment were proceeded by using the Falex test machine.The results show that DLC coating and CrN coating have the excellent properties of friction reducing and antiwear in glycerin environment.The maximum friction torque of DLC-CrN coating matching pairs in glycerin environment under 100 N load is relatively small,and there is no obvious wear and scratch on the surface of the sample,indicating the DLC-CrN coating matching pairs have excellent tribological properties in glycerol environment and under high speed and heavy load conditions.