Steel structure housing reduces the damage to the environment caused by traditional building materials such as brick and tile production, lime, cement and excavation of sand and stone. The construction waste, dust and noise of construction are greatly reduced. The reconstruction and demolition are easy, and the recovery and reuse rate of materials are high. Many developed countries regard it as an important way to reserve steelResidential construction is a major resource consumption and greenhouse gas emissions, accounting for about 40% of the total social energy consumption. According to the research of professional institutions, the carbon emission of reinforced concrete structure residential materials is 740.6 kg / m2, while the carbon emission of steel structure residential materials is 480 kg / m2, which is reduced by 35%.