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/Al2O3　catalysts　were　prepared　by　incipient-wetness　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-2　physical　adsorption,　X-ray　diffraction　(XRD),　H-2　temperature-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　Fe2O3　in　the　modified　bauxite,　which　could　decrease　the　reduction　temperature　of　Fe2O3,　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.