In　order　to　remove　ozone　from　the　bleed　air　in　aircraft　cabins　by　catalysis　method,　two　different　catalysts　(nanometer　TiO2　and　MnO2-CuO)　were　chosen　to　analyze　the　ozone　removal　efficiency.　A　plasma　ozone　generator　was　used　to　control　the　ozone　concentration　in　a　reactor.　The　effects　of　flow　velocity,　initial　concentration,　and　humidity　on　the　ozone　removal　were　analyzed.　The　results　show　that　the　MnO2-CuO　catalyst　was　more　effective　in　ozone　degradation.　The　results　in　this　paper　can　be　a　foundation　for　further　research　on　catalytic　removal　of　ozone　for　bleed　air　purification　in　an　aircraft　cabin　in　the　future.