In the process of exterior wall design and construction, the construction of thick and high foundation is completed first. On this basis, the exterior wall is constructed with equal thickness thermal insulation steel plate, and the connection of profile steel plate is realized on the basis of wall beam and steel frame column. C cold rolled steel purlin and profiled steel sheet are selected for concrete roof design, and blue paint is selected for external roof beautification scheme. The plan for building the interior floor is to level the concrete floor and then level it. The height of the indoor floor shall be 15 cm higher than that of the outdoor floor. The concrete scheme is selected around the construction water, and the design specification is 5% slope and 600mm width.