This work presents structural, morphological and magnetic response of magnetite /reduced graphene oxide (Fe3O4/RGO) nanocomposites. The nanocomposites of Fe3O4/RGO were prepared at different concentration by using chemical co-precipitationmethod. The phase formation of the magnetite nanoparticles was confirmed by using X-ray diffraction (XRD) technique. The surface morphology was studied using scanning electron microscope (SEM). The purity of nanocomposites was confirmed by energy dispersive analysis of X-ray (EDAX) analysis. A magnetic property was carried out by using physical property measurement system (PPMS).