本文梳理及比较了宁夏平罗县与同心县农地抵押贷款的运作过程。分析显示平罗模式与同心模式在制度生成方式、融资机制、农地抵押功能、农地处置机制及市场化程度等方面存在着较大的差异,两者都将面临土地经营权年限逐渐减少的挑战。因此,为保障农地抵押贷款的可持续性,需要延长二轮承包关系的年限。 This paper combs and compares the operation process of rural land mortgage loans in Pingluo County and Tongxin County in Ningxia. The analysis shows that there are big differences between Pingluo model and concentric model in the aspects of system generation, financing mechanism, farmland mortgage function, farmland disposal mechanism and marketability, etc. Both of them will face a gradual decrease of the land management rights challenge. Therefore, in order to ensure the sustainability of agricultural land mortgage loans, the need to extend the two-year contractual relationship.