近年来,随着我国经济的飞速发展,能源短缺的局面随之凸显,建筑作为能耗大户之一,它的节能显得尤为重要。在不断的研究中发现,应用外墙外保温系统,不仅能够使建筑能耗显著降低,而且还能起到一定的保温隔热作用。聚氨酯以其导热系数低、防火性能高等优点,现已被广泛应用于各类建筑工程的外墙外保温系统当中。基于此点,本文就聚氨酯外墙外保温系统施工技术分析及防火要点进行探究。 In recent years, with the rapid development of economy in our country, the situation of energy shortage has become prominent. As one of the big energy users, building energy conservation is particularly important. In continuous research, we found that the application of exterior insulation system can not only significantly reduce the building energy consumption, but also can play a role of thermal insulation. Polyurethane with its low thermal conductivity, high fire performance, it has been widely used in various types of construction of exterior insulation systems. Based on this point, this article explores the construction technology analysis and fire prevention of polyurethane exterior wall thermal insulation system.