The present invention relates to a kind of non-noble metal honey comb ceramic catalyst used for purification of automobile exhaust. The honey comb ceramic is coated with double layer orifice structure modified Al2O3 used as catalyst carrier, the activity is promoted by the oxide of iron, oxides of Co, Ni, Mn, Cu, Cr and oxide of rare earth Ce or oxides of mixture of rare earth elements (Ce content larger than 35%). The advantages of said invention are good the mal stability, Al2O3 coating not shed easily and catalyst service life being longer even under the condition of high temp service. |