The invention discloses a foamed cement fireproof heat-insulation board for building, which is composed of the following components in parts by mass: 1000 parts of cement, 50-60 parts of foam control agent, 3-4 parts of polypropylene fiber, 5-6 parts of early strength agent, 50-60 parts of foaming agent, and 500-600 parts of water. The foamed cement fireproof heat-insulation board for building obtained by adopting the technical scheme has the advantages of low heat conduction coefficient, high strength, low absorption rate, and the like; and at the same time, the formula components of the heat-insulation board are free of reactants capable of generating poisonous and harmful substances, thus the heat-insulation board is fireproof and environmentally friendly.