Method of burning combustible gas

PROBLEM TO BE SOLVED : To provide a method in which flammable gas can be burnt even at a low temperature and oxidation combustion can be effected in a stable manner. SOLUTION : A catalyst, in which powder, which is prepared by applying platinum group elements other than palladium and palladium oxides onto carriers containing composite oxides composed of at least two kinds of oxides selected from the group comprising oxides of alumina, silica, titania, zirconia and oxides of rare earth elements, is applied onto a heat resistant base material, is disposed in the preceding stage of an flammable gas passage, and a catalyst in which powder, which is prepared by applying at least one kind of oxide selected from the group comprising oxides of magnesium oxide, zirconia and are earth elements and platinum group elements other than palladium and palladium oxides onto the carriers is applied onto a heat resistant base material is disposed in the following stage of the catalyst, whereby flammable gas is burnt.