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High active and stable gold catalysts supported on crystalline Fe_2O_3 and CeO_2/Fe_2O_3 were prepared via the deposition-precipitation method.The catalyst with a Au load of 1.0% calcined at 180℃ showed a CO conversion of 100% at -8.9℃,while Au/CeO_2/Fe_2O_3 converted CO completely at -16.1℃.Even having been calcined at 500℃,Au/Fe_2O_3 still exhibited significant catalytic activity,achieving full conversion of CO at 61.6℃.The catalyst with a low Au load of 0.5% could convert CO completely at room temperature and kept the activity unchanged for at least 150 h.N_2 adsorption-desorption measurements show that the crystalline supports possessed a high specific surface area of about 200 m~2/g.Characterizations of X-ray diffraction and transmission electron microscopy indicate that gold species were highly dispersed as nano or sub-nano particles on the supports.Even after the catalyst was calcined at 500℃,the Au particles remained in a nano-size of about 6-10 nm.X-ray photoelectron spectra reveal that the supported Au existed in metallic state Au~0.The modification of Au/Fe_2O_3 by CeO_2 proved to be beneficial to the inhibition of crystallization of Fe_2O_3 and the stabilization of gold particles in dispersed state,consequently promoting catalytic activity.