Abstract: In response to the challenges of diverse roof structural types in industrial and community buildings, incomplete original structural documentation, and complex photovoltaic system equipment configurations, this study systematically investigates key construction technologies for distributed photovoltaic power stations under complex roof conditions, using the hua feng Electronics (Wuhu) 3.25 MWp rooftop distributed photovoltaic power project as the engineering background. Through on-site inspections and structural reviews of the existing building roof load-bearing capacity, combined with varying roof structural conditions, a support foundation design integrating concrete piers and localized anchorage is proposed to enhance the overall stability of the support system while ensuring roof waterproofing safety. Engineering practice demonstrates that this approach effectively improves the construction quality, operational efficiency, and economic performance of distributed photovoltaic power stations on complex roofs.