情势变更原则是合同法的一项重要制度,我国在合同法的制定过程中,对是否规定情势变更原则存在很大争议,却最终未能在新的合同法中得以设立。但是在司法实践中,最高人民法院以批复的形式形成了有关适用情势变更原则的判例。笔者认为我国应该建立完善情势变更制度。本文对我国情势变更制度的现状进行了分析,阐述了合同法建立情事变更制度的必要性。 The principle of the change of circumstances is an important system of the contract law. In the process of formulating the contract law in our country, there is much controversy over whether to stipulate the principle of change of circumstances. However, it has not been established in the new contract law. However, in judicial practice, the Supreme People’s Court formed a case of replying on the principle of changing circumstances. I believe that our country should establish and improve the situation change system. This article analyzes the status quo of the system of the situation change in our country and expounds the necessity of establishing the system of the situation change by the contract law.