Abstract: This paper first elaborates on the strategic significance of county-level distribution networks in zero-carbon park construction. Based on the resource endowments (wind, solar, industry, and load) and practical construction conditions of different counties, it analyzes four key pillars: localized development, integrated system planning, diversified model innovation, and secure technological support. A framework for the construction of a zero-carbon park is proposed, which comprehensively utilizes the coordination of source-grid-load-storage, digital intelligent regulation, and the interactions of multiple energy sources complementation technologies. Differentiate construction plans are proposed for three types of county scenarios, including the eastern (industrial), the central (agricultural), and the western (famous for natural scenery). Finally, focusing on challenges such as technological bottlenecks, funding constraints, and institutional barriers, the paper proposes countermeasures from the perspectives of technological R&D, financial assurance, and policy mechanisms, offering recommendations for large-scale and differentiated advancement of zero-carbon park construction in China's counties.