本文对经济分析法学的学说史进行了简要的回顾,从中引申出交易成本概念。交易成本是人类社会经济活动中的必要耗费,按照经济基础决定上层建筑的哲学观点,法律的原始起源就是对交易成本及社会关系不确定性的降低,从而,交易成本成为解释法律制度的经济本质及其演变过程的重要范畴。 This article briefly reviews the doctrine of economic analysis jurisprudence, deriving the concept of transaction costs. Transaction cost is the necessary cost in the economic activities of human society. According to the philosophical view that the economic foundation determines the superstructure, the original origin of the law is to reduce the transaction costs and the uncertainty of the social relations. Therefore, the transaction cost becomes the economic essence to explain the legal system And its important areas of evolution.