Driven by the dual goals of carbon peaking and carbon neutrality and the rural revitalization strategy, ecological circular agriculture has become a core path for addressing agricultural resource constraints and achieving high-quality agricultural development, and national agricultural science and technology parks are the key carriers for this path. This paper focuses on the arid and semi-arid areas in Northwest China, and deeply explores the precise development path of ecological circular agriculture. Through the analysis of the development shortcomings of Tianshui National Agricultural Science and Technology Park in terms of resource utilization, technology adaptation and industrial chain coordination, it aims to provide empirical reference and practical scheme for the circular and precise upgrading of national agricultural science and technology parks. At the same time, it provides scientific support for similar areas to achieve a win-win agricultural ecological benefits and economic benefits, help the “ double carbon “ goal and the implementation of rural revitalization strategy. Taking Tianshui National Agricultural Science and Technology Park as the research object and following the logical framework of current situation diagnosis, technology integration, empirical verification and strategy optimization, this paper systematically analyzes the development foundation and existing shortcomings of ecological circular agriculture in Tianshui, constructs a precision technology integration and innovation system covering planting and breeding links, waste recycling and industrial-chain coordination, and verifies the ecological, economic and social benefits of the model through typical cases. On this basis, in combination with the development laws of national agricultural science and technology parks and the regional characteristics of Tianshui, upgrading strategies for the park are proposed from four dimensions: innovation capacity, industrial integration, policy support and low-carbon transformation, providing a reference for the circular and precise development of agricultural science and technology parks in arid and semi-arid areas of northwest China.