Abstract: In response to the Digital China strategy and the construction of digital twin water sector, digital empowerment enhances the safe operation monitoring and intelligent, refined management level of river network engineering. This article takes Suzhou High Tech Zone as an example to analyze the construction needs of digital twin platforms, and proposes a comprehensive platform construction framework that includes flood control and drainage, water environment protection, and water works management services. Based on the existing basic, monitoring and business data foundations in the research area, the data baseplate of the platform was built using the core application technology of "digital twin technology + BIM (Building Information Modeling)". The model platform, twin fusion, knowledge platform and digital twin scenario were integrated and constructed. Based on data, algorithms and computing power support, a water works forecasting and scheduling platform was built, providing four key functions of "monitoring and forecasting, dynamic warning, scenario rehearsal, scheduling plan" for multi business applications, promoting the fine management and intelligent operation and maintenance of local water facilities, and providing important reference for supporting the construction of digital twin water sector in Jiangsu Province.