The tribological properties of fluorographene as additive in the polyurea grease were studied by Rtec multi function tribometer Mft-5000.The surface morphology and the chemical states of the main elements of the wear scar of steel disc were analyzed by the NPFLEX 3D metrology system and X-ray photoelectron spectroscopy (XPS),respectively.The results show that both the fluorographene and fluorographite have significant effects on the cone penetration,oil separation and evaporation loss of polyurea grease,while have little effect on the drop point of polyurea grease.At the same addition amount,fluorophene has better anti-wear and friction reducing performance than fluorographite on polyurea grease.When the mass fraction of fluorophene is 0.8%,the anti-wear and friction reducing effect is the best.Under the lubrication of the polyurea grease with luorophene,a protective film composed of complex carbon oxide,(C10F8) n,Fe2O3 ,FeF3,carbonitride and/or nitrogen oxide is formed on the wear scar surface of steel disc.This protective film prevents the direct contact of the friction surface and has an effective friction reducing and anti-wear effect.