Abstract: This article explores the design and implementation of a GIS based information management system for township water conservancy infrastructure. The research focuses on system architecture, functional modules, data processing, and visualization display, aiming to enhance the scientific and efficient management of water conservancy facilities. Verify the feasibility and practicality of the system through empirical research, analyze its role in data management, spatial queries, and decision support, and propose optimization suggestions. Research has found that GIS technology can effectively integrate spatial data and improve management efficiency, but there are also problems such as lagging data updates and complex operations. In the future, new technologies can be combined to further enhance the level of system intelligence.