Integrated insulation and decoration board is a new type of external insulation wall panel that combines insulation and decoration functions. This wall panel is widely used due to its lightweight, high strength, and insulation properties. However, due to construction and environmental issues, it is prone to detachment of external insulation wall panels. The construction process has a significant impact on the appearance and performance of buildings. Therefore, this article introduces the basic structure of building exterior wall insulation and decoration integrated panels, and elaborates on the construction process of the insulation and decoration integrated panels. It standardizes the construction process of the insulation and decoration integrated panels, improves the construction preparation and construction stage work content, emphasizes the importance of building material acceptance and mechanical testing, and deeply explores the quality control and completion acceptance of the insulation and decoration integrated panels. Finally, research has shown that strict control over construction drawings, building materials, base walls, construction quality, and the professional level of construction teams can ensure the construction quality of building exterior wall insulation and decoration integrated panels, and improve the safety, reliability, and durability of external insulation wall panels.