With the development of technology, water resources management has entered a phase of the digital management. Therefore, accelerating the digital construction of water resources management has become a new topic. This study analyzes the importance and necessity of regional water resources digital management in terms of the ideas and means in digital management. Combined with the reality of regional water resources management, the study discusses the information collection, processing and transmission network of regional water resources, the database system of water resource management, integrated business management system and the digital water management support system. It also gives the primary system framework for regional water resources digital management. The study is helpful for a reasonable use of digital means to optimize the allocation of water resources to deal with serious water shortage in the northern region.