“艰难情形原则”是国际商事交易中解决因经济环境异常变动所造成的合同履行困难之一项重要法律制度。我国立法机关在起草1999年的《合同法》时曾经考虑将该原则写入法律条文,但最终还是放弃。然而,在当前的国际经济形势下,我国的司法机关已经开始在司法实践中借鉴该原则。 “Difficult Situations Principle ” is an important legal system in international commercial transactions that deals with the difficulty of contract performance due to abnormal changes in the economic environment. At the drafting of the 1999 Contract Law, our legislature had considered writing this principle into the legal provisions, but eventually gave up. However, under the current international economic situation, our judiciary has begun to draw lessons from this principle in judicial practice.