Graphene oxide-Fe3O4 (GO-Fe3O4) nanocomposites had been synthesized through the solvothermal technique and used as lubricant components. The tribological assessments and a sequence of characterization methods had been performed to know the lubrication mechanism of GO-Fe3O4 nanocomposite. The GO-Fe3O4 nanocomposites exhibited wonderful tribological properties on account of excessive dispersion stability in water. Friction outcomes indicated that the GO-Fe3O4 can considerably enhance the tribological properties and the friction coefficient and put on scar diameter had been lowered by 33.6% and 32.3% in contrast with base fluid, respectively. Raman outcomes confirmed that the GO nanosheets shaped a protecting movie on the contact interfaces, which facilitated shear, lowered the damage and inhibited the tribo-corrosion. The lubrication mechanism was attributed to the synergistic lubrication impact between the Fe3O4 nanospheres and the GO nanosheets.