Hydrothermally　treated　bauxite　with　high　surface　area　was　used　as　a　ruthenium-based　catalyst　support.　A　series　of　Ru/bauxite　and　2.0%　(mass　fraction)　Ru/Al　2O　3catalysts　were　prepared　by　incipientwetness　impregnation.　The　loading　content　of　ruthenium　in　the　Ru/bauxite　catalysts　was　varied　from　1.0%　to　4.0%.　The　catalysts　were　thoroughly　characterized　by　X-ray　fluorescence　(XRF),　low　temperature　N　2physical　adsorption,　X-ray　diffraction　(XRD),　H　2temperature-programmed　reduction　(H　2-TPR),　and　CO　temperature-programmed　desorption　(CO-TPD).　The　performances　of　the　catalysts　for　the　water-gas　shift　reaction　were　also　investigated.　The　results　indicated　that　Ru/bauxite　catalysts　possess　an　excellent　ability　to　evolve　hydrogen　in　the　water-gas　shift　reaction.　This　was　attributed　to　the　interaction　between　Ru　and　Fe　2O　3in　the　modified　bauxite,　which　could　decrease　the　reduction　temperature　of　Fe　2O　3,　and　also　improve　the　adsorption-desorption　behavior　and　decrease　the　desorption　temperature　of　Ru/bauxite　catalysts　for　CO　molecules,　resulting　in　higher　activity　in　the　water-gas　shift　reaction.　©　Editorial　office　of　Acta　Physico-Chimica　Sinica.