English：

Taking the ultra-low energy consumption residential building project of Zhonghai Heshandaguan Project in Hohhot as the specific research object, the following technologies, methods and measures are adopted, namely, the construction technology of external insulation with high connection safety in large- thickness external wall, the installation method of external windowwith non-thermal bridge and safe and easy maintenance, the waterproof and thermal insulation construction technology of roof and parapet wall, the construction technology of ground thermal insulation, and the treatment method of pipeline air tightness through the envelope structure. The operation and display are carried out through the entity model to solve the problems, such as thermal insulation and waterproof, etc. that need to be solved urgently in the large-scale promotion of ultra-low energy consumption residential buildings in severe cold regions, achieving good thermal insulation and environmental protection effects.