[Abstract] Through engineering examples, this paper takes a series of measures to solve the problems of unqualified welding joints, poor glass installation accuracy, and inaccurate cutting of accessories, effectively controlling the first pass rate of the construction and installation quality of the folded-line composite curtain wall, and successfully completed The construction of the curtain wall of Jinjiang Junior and Amateur Sports School has solved the problem of the first pass rate of the construction and installation quality of the folded-line composite curtain wall, and achieved good technical, economic, environmental and social benefits.