在经济分析法学中,对于合同法的经济分析是其中较为重要的一个领域。而本文主要围绕合同法经济分析中的效率违约理论展开论述,从各个角度对其进行评价。同时,通过对效率违约理论的反思,通过借鉴该理论所体现的效益原则与经济分析的方法,来克服我国成文法的局限性,为健全和完善我国合同法中违约责任理论提供一种全新的思考模式。 In economic analysis jurisprudence, economic analysis of contract law is one of the more important areas. However, this dissertation focuses on the theory of efficiency default in contract law economic analysis and evaluates it from all angles. At the same time, through the introspection of the theory of efficiency breach, by referring to the principle of benefit and the method of economic analysis, this article overcomes the limitation of our country’s statutory law and provides a brand-new thinking for perfecting the theory of breach of contract in our contract law mode.