Impregnated paper-overlaid boards were made with E,0, grade blockboards as substrates, poplar veneers as buffer layers and A-grade impregnated papers as decorative surfaces. Formaldehyde emissions from the impregnated papers and the decorated board overlaid with the paper were tested, respectively. The results showed formaldehyde emissions from the impregnated paper-overlaid boards could be less than 0.5 mg/L only if the formaldehyde emissions from the papers were less than 0.7 mg/L.