Perovskite oxide LaCoO3 and the mixture oxides of La2O3 + Co3O4 were prepared by sol-gel method. Then Au/La-Co-O catalysts were prepared by deposition- precipitation (DP) method and characterized by means of XRD, BET, XPS, TEM and IR. The catalytic performance for CO low-temperature oxidation and stability over these catalysts were compared. The results of experiment showed gold catalysts supported on perovskite oxides have higher catalytic activity and stability than that of supported on the simple oxides.