In the building exterior protection system, it involves the welding connection of a variety of metal materials, such as the connection of gutters, the connection of purlins, and the connection of roof panels. Effective design and construction of welding It directly affects the engineering cost, engineering quality, service life, and maintenance costs, but there are still certain constraints on the welding of stainless steel systems in China. Therefore, the construction welding process needs to enter the innovative, efficient, high-quality and intelligent fast lane. Explore new welding methods. According to its own advantages, laser welding can be applied in many places of building envelope systems. Not only can it achieve batch, personalized and intelligent welding production, but it can also technically meet the requirements of complex three-dimensional welding, which can help improve The quality level of the products reduces production costs and brings huge economic benefits to the enterprise.