In this paper, a new insulation system of polyurethane foam and moulding board with glazed-hollow-bead mortar is designed. According to the principle of the temperature gradient and the spreading and releasing stress in different layers, the fire prevention and aging resistance performance of polystyrene board in external insulation system are improved. Performances of fireproofing and insulation motor of different ingredients, such as glazed hollow bead, fly ash, polymer emulsion powder, quicklime and fiber were tested in the lab, and the reasonable mix ratio of the mortar was obtained. Moulding board of glazed-hollow-bead mortar was deigned and manufactured. To quickly construct and improve quality of the new insulation system, fixed moulding board system was manufactured, board of glazed-hollow mortar and fixed board system were gained.