Magnesium oxide fireproof board features high-temperature resistance, flame retardancy, sound absorption, shock resistance, insect and corrosion resistance, odorless, tasteless, and non-polluting. It can be directly painted or faced, installed with exhaust nails, and tiles can be directly affixed. The surface has good coloring properties, high strength, flexibility, nailable, sawable, and adhesive. It is convenient for decoration and can be combined with various insulation materials to form composite insulation boards.