The invention discloses a heat-insulation and noise-reduction building panel for building a house. The heat-insulation and noise-reduction building panel is prepared from the following components in parts by weight: 100 to 300 parts of glass powder, 150 to 250 parts of fly ash, 3 to 7 parts of dispersant, 2 to 3 parts of foaming agent, 10 to 30 parts of binding agent, 30 to 60 parts of borax, 20 to 80 parts of glass fibers and 200 to 300 parts of water. The borax can be used for reducing the softening temperature of a sample so that the sintering temperature is reduced, and the borax plays animportant role in a foaming process. The panel prepared from the components has the advantages of heat insulation and noise reduction, and is prepared from waste materials of a power plant, so that the heat-insulation and noise-reduction building panel has great significance on environment protection.