Two　industrial　wastes,　spent　FCC　catalyst　(sFCCc)　and　blast　furnace　ash　(BFA),　were　used　as　catalysts　in　the　fast　pyrolysis　of　sawdust,　and　the　catalytic　pyrolysis　reaction　characteristics　of　sawdust　in　the　temperature　range　of　400−700　were　explored.　The　results　showed　that　both　catalysts　promoted　the　conversion　from　liquid　products　to　gaseous　products,　and　the　highest　gas　yield　was　52.60%　at　700　catalyzed　by　BFA.　The　sFCCc　had　stronger　deoxygenation　activity　at　500−600　,　resulting　in　higher　CO　and　CO2　production　in　gaseous　products.　While　BFA　had　higher　polycondensation　and　dehydrogenation　activity　at　600−700　,　and　promoted　the　formation　of　polycyclic　aromatic　compounds　and　H2.　Pyrolysis　oil　was　mainly　composed　of　phenols.　The　sFCCc　promoted　the　conversion　of　methoxy　phenol　to　benzenediol.　FT-IR　analysis　of　pyrolysis　oil　showed　that　sFCCc　promoted　the　removal　of　C−O　and　C=O,　resulting　in　decreased　acid　and　ester　compounds　and　increased　CO2　yield.　©　2022　Science　Press.　All　rights　reserved.