In order to find a suitable Fe-Ni base alloy as a kind of candidate metal inert anode materials tor aluminum electrolysis, three kind of Fe-Ni (with different wt%) alloys with mass ratio of 50:50, 60:40 and 70:30 respectively were prepared by powder metallurgy process. Oxidation behaviors of the alloys were studied at 900℃. The results indicated that the oxidation kinetic curves follow the parabolic law and anti-oxidation properties enhanced with increasing ratio of Fe to Ni in the alloy. X-Ray Diffraction showed that the oxide film formed on the anodic surface consisted of Fe2O3 and Fe3O4. 5wt% Al and 30wt% Co were added in different Fe-Ni alloy respectively. The results showed that anti-oxidation properties or Fe-Ni-Co is better than Fe-Ni-Al at 900℃.