全面总结国内外水网建设实践与相关研究进展，系统分析国家水网概念内涵、体系构成、功能结构、优势特 点，提出国家水网构建的基础理论与遵循原则。从普适含义和方法论角度，分析总体目标与基本策略的深刻涵义 和二者的辩证关系。在此基础上，从国家水网构建的建设任务与技术路线、基本理念与具体举措、水网“纲、目、 结”结构、水网层次体系、水网功能任务等角度，分析推进国家水网建设中需要重点把握的几方面关系，以期为国 家水网建设提供战略支撑及策略储备。

Based on the new development stage, there is a compelling exigency to fortify the top-level design, strategic layout, and the establishment of a more systematic, higher standard, resilient, and secure national water network. This imperative is grounded in the evolving landscape, fresh imperatives of modernization, and emerging duties pertaining to national water security. It is a long-term, systematic, and strategic project to build up the national water network. It has an important guiding function and practical significance to divide the overall strategy into basic tactics for promoting the construction of the national water network step by step. Water network construction practice and related research progress from the perspective of the domestic and foreign were summarized comprehensively. The conceptual connotations, compositional framework, functional structure, and inherent advantages underpinning the national water network are systematically delved. The basic theory and principles of national water network construction were put forward, and the main task and technical route of national water network planning and construction were also defined. The profound meaning of overall strategy, basic strategy, and the dialectical relationship between them were analyzed from the perspective of universal meaning and methodology. Builc upon this foundational analysis, the strategic and tactic relationship of national water network planning and construction was analyzed from the aspects of the basic idea and specific measures to direct the planning and construction of the national water network, national water network system structure and composition, hierarchy system of the nation-province-city-county water network, functions and task of the national water network. The analytical insights and recommendations proffered are expected to provide strategic support and tactic reserves for the planning and construction of the national water network.