1. The interior insulation layer will be easy to be damaged during the interior decoration; while the exterior insulation layer can avoid disturbing the residents during the reconstruction but also can avoid the insulation layer being damaged during the interior decoration. 2. The exterior thermal insulation layer is installed outside the exterior-protected construction, so the thermal insulated panel for exterior wall can protect the main structure of the building. When the outside climate changes, the temperature in the wall will change accordingly. If we adopts thermal insulated panel for exterior wall, the temperature will mainly happened in the exterior thermal insulation layer. Hence, the stress caused by the structural change due to the temperature change is buffered, avoiding the great temperature change in the main structure and effectively improving the durability of it. The service life of the building is prolonged accordingly.3. The exterior wall insulated panel is installed outside the wall, so its insulation efficiency is better than the interior insulated panel, which can reduce the cost of building, enlarge the usable floor area and gain higher economic benefits.4. The usage of exterior thermal insulated panel is good for eliminating or reducing the impact caused by the heat channel area around the joint of the exterior wall, ring beam, construction column, frame beam and the joint between the top parapet and roof panel.