Using　the　molten　salt　and　polyvinyl　alcohol-protected　reduction　method,　we　fabricated　Co3O4　octahedron-supported　Au-Pd　(x(AuPdy)/Co3O4;　x　=　(0.18,　0.47,　and　0.96)　wt%;　y　(Pd/Au　molar　ratio)　=　1.85-1.97)　nanocatalysts.　The　molten　salt-derived　Co3O4　sample　possessed　well-defined　octahedral　morphology,　with　an　edge　length　of　300　nm.　The　Au-Pd　nanoparticles,　with　sizes　of　2.7-3.2　nm,　were　uniformly　dispersed　on　the　surface　of　Co3O4.　The　0.96　(AuPd1.92)/Co3O4　sample　showed　the　highest　catalytic　activity　for　toluene　and　o-xylene　oxidation,　and　the　temperature　required　for　achieving　90%　conversion　of　toluene　and　o-xylene　was　180　and　187　degrees　C,　respectively,　at　a　space　velocity　of　40000　mL/(gh).　The　high　catalytic　performance　of　Co3O4　octahedron-supported　Au-Pd　nanocatalysts　was　associated　with　the　interaction　between　Au-Pd　nanoparticles　and　Co3O4　and　high　concentration　of　adsorbed　oxygen　species.　(C)　2016,　Dalian　Institute　of　Chemical　Physics,　Chinese　Academy　of　Sciences.　Published　by　Elsevier　B.V.　All　rights　reserved.