Abstract:In order to promote the application of prefabricated structures in the field of water conservancy engineering, based on the pilot application case of the overall prefabricated flood control wall in the backbone river training project of the southern drainage channel of East-Punan area, this paper combines quantitative and qualitative methods through practical data analysis and on-site investigation to expound its advantages of high standardization, high construction efficiency, good quality controllability, energy conservation and environmental protection. The difficulties and problems that arise in the application process are summarized, and corresponding solutions are proposed from multiple aspects such as innovative design methods, improving production processes, refining construction methods, and improving management systems, thereby providing reference for similar engineering construction and promoting the practical application of prefabricated structures in river channel improvement projects.