At present, with the popularity of external wall insulation system in the domestic market, various forms of engineering quality problems gradually appear. In the construction process of the thermal insulation system, there will be quality risks caused by the weather conditions at the construction site, the operation level of the construction personnel, construction technology and other problems. The problems that often occur are mainly reflected in the following aspects: poor appearance quality caused by the uneven surface, water leakage caused by the failure to handle the detail nodes, falling off of the external wall bricks caused by the poor pasting, and wall cracks caused by the nonstandard practices And so on.