A　theoretical　study　of　the　oxygen　reduction　mechanism　catalyzed　by　cobalt-polypyrrole　is　investigated　in　detail　by　means　of　density　functional　theory　method　using　the　BLYP/DZP　basis　set.　The　calculations　suggest　that　the　cobalt-polypyrrole　has　a　platinum-like　catalytic　behavior　based　on　the　adsorption　energetics　of　the　reaction　intermediates.　The　dicobalt　polypyrrole　catalyst　exhibits　a　higher　catalytic　activity　than　that　of　mono-cobalt-polypyrrole,　due　to　the　fact　that　the　PPy　chains　in　di-cobalt-polypyrrole　have　a　regular　structure.