The selective catalytic reduction (SCR) of NOx with C3H6 was studied in the presence of oxygen. The SCR catalysts used comprised a lower layer of Au(Pt)/Al2O3 of double wash-coated monolith catalysts and zeolites wash-coated over the Au(Pt)/Al2O4 layer. The catalytic performance of the double wash-coated catalyst was remarkably improved. The Au and Pt particles were dispersed uniformly on the monolith with particle sizes range of 3~5nm and 5~10nm. respectively. The catalyst binders used were colloidal silica, potassium silicate and tetraethyl orthosilicate, and the best catalyst activity was achieved with the former. The zeolites used for the catalyst upper layer were MCM-41, FER, Y5.3-Zeolite and ZSM5, among which the NH4-ZSM5-coated catalyst showed the most effective activity. The experimental results confirmed the promising potential of the double wash-coat, monolith catalyst for SCR of NOx with C3H6 due to the effective combination of noble metal monolith catalyst with zeolite for the removal of NOx by SCR with hydrocarbons.