In this paper,the effect of Ce-doping of metal oxidation on the removal of volatile organic compounds was studied. The combustion catalysts MnOx /TiO2 and MnOx-CeO2 /TiO2 were prepared with MnOx and MnOx-CeO2 as active components by impregnation method on porous TiO2 films. The active group of distribution ratio and loading,calcination temperature,and calcination time were investigated on toluene removal. The preparation process of catalyst was the loading amount of Mn about 15 wt% ,and the ratio of Mn to Ce 3∶ 1 at the calcination temperature of 500 ℃ for 5 h. Experimental results show that compared with MnOx /TiO2, the ignition and complete conversion temperatures on MnOx-CeO2 /TiO2 catalyst are significantly lowered,the size of oxide particles on the surface of MnOx-CeO2 /TiO2 catalyst is reduced and they disperse evenly.