县域在我国经济发展和乡村振兴中具有关键地位，也是数字乡村建设的主阵地，数字乡村的建设反过来也是促进县域经济发展和提升农民收入的重要动力。当前我国县域数字乡村建设存在发展基础较差、城乡与区域发展不平衡、缺乏建设运营和数据共享机制、资金和人才不足等问题。农业农村大数据资源与大数据平台是建设、发展数字乡村的重要基础，也是数字乡村顶层设计的重要组成部分。在此背景下，本文提出“5+N+N”的县域数字乡村建设总体思路，即构建一个农业农村大数据资源目录、开展一次县域数字乡村发展评价、制定一个数字乡村发展总体规划、搭建一个数字乡村综合服务平台、建设一个区域数字农业产业示范基地/数字治理示范村镇，和拓展N个数字乡村应用场景、实施N项数字乡村支持工程。在实施层面，通过政府、企业、科研单位的合作，向上连通国家、省、市各级数字经济管理平台，向下打通乡镇、村庄的数字管理应用，实现对县域数字乡村建设水平的全面提升。该框架体系为县域数字乡村发展的顶层设计提供了新的思路，有利于县域依据当地情况制定数字乡村实施路径，推动县域经济数字化转型。

Counties play a key role in the process of China's economic development. They are also the main front for the implementation of rural digitalization. Digitalization of rural area is also an important driving force to promote the development of county economy and to increase farmers’ income. There are many problems in the construction of county-level digitalization in China, including the inferior infrastructure, the uneven development between countryside and city, the lack of operational and data-share mechanism, as well as the shortage of funds and qualified personnel. Agricultural and rural big data along with big data platform are the foundation of developing digital countryside, as well as the key aspect of top-level design of rural digitalization. Under these background, this paper proposes a “5+N+N” framework to implement county-level rural digitalization, i.e., establishing a rural big data resource catalog, performing a comprehensive evaluation of rural digitalization development, formulating a master plan as the guidance of the implementation of rural digitalization, setting up an integrated service rural digital platform, constructing a digital agriculture demonstration area (and model villages or towns for digital rural governance), and promoting multi-scenarios for the application of digital technologies, and implement several back-up projects. Through the cooperation of governments, enterprises and research institutions, the intercommunication among the digital economy management platforms of the country, province and city levels, and the applications of the towns and villages will be connected, and the overall promotion of county-level rural digitalization will be achieved. This framework provides a pathway to the top-level design for the development of digitalization in counties, which could help county governments set implementation plans for local rural digitalization process, and promote digital transformation of county economy.