Pt/CeO2-ZrO2-Bi2O3/SBA-16 catalysts were prepared to realize complete oxidation of formaldehyde at room temperature. Due to the high oxygen release and storage abilities of the CeO2-ZrO2-Bi2O3 promoter, formaldehyde was effectively decomposed even with a low amount of the Pt activator. For the Pt(0.7 wt%)/Ce0.68Zr0.17Bi0.15O2-delta(16 wt%)/ SBA-16 catalyst, complete decomposition of formaldehyde was achieved at temperatures as low as 20 degrees C, and this catalytic activity is higher than the Pt(0.7 wt%)/Ce0.80Zr0.20O2(16 wt%)/SBA-16 case (98% of formaldehyde conversion at 80 degrees C).