本文着眼于火灾频发的社会现实,通过结合国内外民用建筑外保温行业的现状及现实中外保温防火中所遇到的问题,进而阐述了构造防火的三种方式的原理,用以说明提高外保温系统的整体防火性能,并且希望能够为我国建筑外保温系统所具有的防火能力的提高有一定的促进作用,同时提高民用建筑抵御火灾的能力,保障公民的财产及生命安全。 This paper focuses on the social reality of frequent fires and expounds the principles of three ways of constructing fire protection by combining the current situation of domestic and foreign civil building insulation industry and the problems encountered in the actual fire insulation at home and abroad, The whole fire-proofing performance of the insulation system, and hopefully can promote the improvement of the fire-proofing ability of the building external thermal insulation system in our country, at the same time, improve the ability of civil buildings to resist fires and ensure the citizens’ property and life safety.