“违约”本来是法律上的一个概念,效率违约在司法界也尚未被认可,但法律最终是为经济服务的,所以本文认为从经济学角度讲,效率违约应该被中国所接纳,进而探讨性提出了效率违约在节约型经济发展下的引入和走向建议。 “Default ” was originally a concept in law. Efficiency default has not been recognized in the judicial circles yet, but the law ultimately serves the economy. Therefore, this paper argues that from an economic point of view, efficiency default should be accepted by China and thus Probing into the efficiency of the default in the economy under the introduction of economic development and recommendations.