情事变更原则是维护合同公平的一个重要原则,在合同履行中显得尤为重要,但在我国现行合同法中却没有予以规定,因此有必要加以研究。本文在探讨情事变更原则的理论根据、适用条件等的基础上,指出在我国确立和完善情事变更原则的重要性并提出相应的立法建议。 The principle of changing circumstances is an important principle to maintain the fairness of the contract, which is particularly important in the performance of the contract. However, it is not stipulated in the current contract law of our country, so it is necessary to study it. On the basis of discussing the theoretical basis and applicable conditions of the principle of the alteration of circumstances, this article points out the importance of establishing and perfecting the principle of the alteration of circumstances in our country and puts forward corresponding legislative proposals.