The　self-made　monolithic　catalysts　in　reverse　flow　catalytic　combustion　reactor　to　explore　the　feasibility　of　disposing　CO　in　low　concentration　was　put　forward　in　this　paper.　A　efficient　noble　metal　Pd　monolithic　catalyst　supported　by　the　cordierite　honeycomb　ceramics　after　pretreatment　was　prepared　with　modified　γ-Al2O3　and　light　rare　earth　elements　(Ce,La)　as　auxiliaries.　The　efficiency　of　the　catalyst　in　the　self-made　reactor,　the　effect　of　preheated　temperature　on　the　monolith　catalyst,　the　effect　of　the　cyclic　period　and　the　space　velocity　on　the　operation　performance　of　reactor　were　investigated.　Results　show　that　the　carbon　monoxide　conversion　efficiency　attains　90%　when　the　catalyst　preheat　temperature　is　200℃,　reversing　cycle　is　8　min,　space　velocity　is　8000　h-1,　and　initial　carbon　monoxide　concentration　is　0.1%.　©　2016,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.