情势变更原则作为民法的重要原则,体现了民法中诚实信用和公平合理的原则精神。但我国合同法至今仍未规定情势变更原则,这是我国民法领域的巨大缺失。笔者从亲身经办的一个房地产合同纠纷案例来阐述我国制定情势变更原则的必要性,从而建议应在未来所制定的民法典或最高人民法院 As an important principle of civil law, the principle of changing circumstances reflects the principle of honesty and credibility and fairness and justice in civil law. However, the contract law of our country has not yet stipulated the principle of changing circumstances so far, which is a huge deficiency in the field of civil law in our country. The author from a personal real estate contract disputes cases to elaborate the necessity of our country to develop the principle of change of circumstances to suggest that in the future should be formulated by the Civil Code or the Supreme People’s Court