Effects of oxidation conditions of starting metal powders on the electric properties of "NANOCON" material have been studied. Thin oxide films were formed on the surface of the starting metal powders by heat treatments. The chemical compositions of the thin oxide films were changed by the atmosphere of the oxidation condition; Al-O film was formed at low oxygen patial pressure and Al-Fe-O film was formed at high oxygen partial pressure. These powders were hot-pree-sintered. The electric resistivity of the "NANOCON" material consisted of metal grain with Al-O film was lower than that of the "NANOCON" material consisted of metal grain with Al-Fe-O film. The relationship between the electric resistivity of these "NANOCON" materials and their film composition is discussed.