Abstract: The nanographite composite/hydrogenated nitrile rubber (HNBR) was prepared by the solution blending masterbatch method, and the microstructure, vulcanization properties, mechanical properties, wear resistance were studied and compared with those of the composite prepared by the traditional mechanical blending method. The results show that the solution blending masterbatch method could make the nano graphite more uniformly disperse in the HNBR matrix. Compared with the composite by the traditional mechanical blending method, the composite prepared by the solution blending masterbatch method had better vulcanization and mechanical properties; the maximum comprehensive torque, elastic modulus, crosslinking degree, vulcanization speed increased by 35%, 44%, 32%, 46%, respectively, but the effect of the process on the improvement of tensile strength and wear resistance of the composites was not obvious.