The urban complex water environment monitoring and management includes five parts: smart monitoring and management system, smart dispatching system, dispatching command center, equipment room, and emergency maintenance facilities. The system can enrich the water regime and water quality monitoring system, integrate and display real-time status information; improve project operation status monitoring and intelligent control mode; strengthen engineering facilities, project maintenance, and supervise information management; establish relevant specialized models to satisfy the requirements for macro-management decision-making, dispatching applications, and emergency response; integrate online monitoring, project operation status information, professional scheduling models, integrate online monitoring, project operation status information, and professional scheduling models, and extract business expression knowledge models that meet the business management framework and development needs to support daily decision-making, scheduling operations and emergency management; provide business support for urban flood control dispatch, manage dispatch proposals and plans,  achieve ecological dispatch, flood control and drought relief dispatch, and meet the business needs of water supply dispatch; provide planning schemes for comprehensive lake remediation, and demonstrate the execution, implementation and remediation of the project.