Abstract: The policy-based agricultural guarantee is an important task of deepening the reform of the rural financial service system and improving the financial supporting system of the rural revitalization strategy in the new era. At present, China's policy-based agricultural guarantees have achieved remarkable results in improving the financial inclusion, supporting the development of agricultural industries, and helping rural residents increase their incomes. However, a series of problems are also revealed, such as weak substantial function of counter guarantee, imperfect check and supervision system, unreasonable risk sharing and compensation mechanism design, talent training and team building lagging behind, imperfect safeguarding measures, and so on. Therefore, for the next step, it is necessary to improve the institutional design of the policy-based agricultural guarantee from the following five areas: firstly, to speed up the improvement of the design of the relative legal system, energize the science and technology to promote the technological innovation for agricultural guarantee; secondly, to improve the internal management system, strengthen risk identification and risk prevention and control, and correct the phenomenon of doing business away from agriculture; thirdly, to improve the working mechanism of the cooperation among governments, banks and the guarantee companies; fourthly, to optimize the establishment of the guarantee system, strengthen the personnel training and team building, and improve the service quality of the agricultural guarantee institutions; fifthly, to formulate development planning scientifically, improve the supporting guarantee measurements, and optimize the organizing and coordinating mechanisms.

Key words: rural vitalization, policy-based agricultural guarantee, realistic reflection, improvement strategies