In order to accelerate the circular economy and realize the social and economic sustainable development, the paper explores the exter-nal wall heat insulation construction technique in cold areas, analyzes the technical requirements for the external wall and heat insulation, illus-trates the selection principle for the external wall and exterior heat insulation materials, and points out the materials can meet the demands for the safe long-term stability and energy-saving long-term stability.%为加快发展循环经济，实现经济社会的可持续发展，对寒冷地区外墙保温施工技术进行了探讨，分析了外墙外保温的技术要求，阐述了外墙外保温材料的选择原则、方法，指出外墙保温材料应满足安全长期稳定、节能效果长期稳定等要求。
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