The authors contribute a novel gold catalyst supported on the facile- ly reducible uranium oxide for WGSR. Gold catalysts supported on uranium oxides obtained at different calcination temperatures in the range from 300 to 500 °C were prepared. Their catalytic activities show obvious dependence on the phase of uranium oxides. At a reaction temperature of 350 °C, the following activity order is obtained: Au/UO3- 300 N Au/UO3-350 N Au/UO3-400 N Au/UO3-450 N Au/U3O8. Au/UO3 cat- alyst demonstrates good activity while Au/U3O8 shows very low activity under the same conditions. Only a small portion of gold is oxidized on the surfaces of both Au/UO3 and Au/U3O8, as shown by XPS results. Dominant metallic gold with a small portion of oxidized gold species is thought to be responsible for the activity. Furthermore, the better WGSR activity on Au/UO3 than on Au/U3O8 is also correlated to facile intrinsic reducibility of UO3 and surface gold atomic concentration in Au/UO3 catalyst. The interface between metallic gold particles and ura- nium oxide is likely the active sites for WGSR.