According to HLB value,the emulsion containing graphene was successfully prepared by mixing surfactant Tween85 with oleic acid.The stability of emulsion was observed and the wettability of emulsion on Copper was determined.The tribological properties of emulsion were studied by CFT1 comprehensive testing instrument.The results show that the surfactant compound could increase stability and wettability of emulsion.Compared with the emulsion without graphene,the emulsion with 006% graphene can reduce the average friction coefficient by 15% and the wear area by 19%.The graphene in the emulsion enters the friction interface to form a continuous protective film during the friction process,and the tribological properties are improved by the interlayer slip because of the small shear force between the layers of graphene.