Abstract: Compared with the traditional rooftop distributed building attached photovoltaic project, the BIPV project is still in its infancy at home and abroad, and there is little reference experience in the construction of BIPV projects on the roofs of existing plants, especially on the roofs of combined row and large-area plants. Based on the completed BIPV project of the main body, this paper summarizes and analyzes the key and difficult problems of design, construction and construction management that need to be solved during the implementation of the BIPV project, proposes targeted solutions, and discusses and shares the design and construction linkage optimization management methods established in the process of project construction for the purpose of improving the management level of the BIPV EPC project.