We report here, for the first time, a simple method to prepare ordered mesoporous carbon containing separate gold, and palladium nanoparticles (AuPd-OMC). Furthermore, the new catalysts were evaluated in the selective hydrogenation of cinnamaldehyde under atmospheric conditions. In comparison with the monometallic catalysts, the AuPd-OMC exhibited excellent catalytic activity (96.2% selectivity for hydro cinnamaldehyde). The observed synergistic effects were ascribed to hydrogen spillover. The Pd nanoparticles possess the main active sites that formed the active hydrogen species, while the Au nanoparticles served as active hydrogen acceptors and diluted the Pd active sites in order to suppress the deep hydrogenation.