论先期违约和不安抗辩权

先期违约和不安抗辩权属不同法系的两项法律制度，其相同之处是都具有有效防止本可以避免的损害的扩大，减少债权人利益损失，维护市场交易秩序，符合合同法对依赖利益予以有效保护的立法趋势。但二者在行使的前提、条件、原因、救济方法等方面有所不同，。作为大陆法系的中国在制订自己的《合同法》时，改造了大陆法系确立的不安抗辩权制度，适当吸收英美法系的先期违约制度中的合理部分，这不但解决了中国市场经济条件下普遍存在的

Anticipatory breach of contract and Einrede der Unsicherkeit

Anticipatory breach of contract and Einrede der Unsicherkeit are two legal systems belonging to different systems of law .Their common points are that they both can:1)effectively prevent the expansion of the dlamage which could be avoided;2)decrease the loss of the beneficiary's interest;3)maintain the transaction order of the market ;and 4) conform to the legislative tendency of the contract law which effectively protect the trust interest.But the two legal systems have differences in such aspects as the presuppositional conchtions of operation,the reason of operation and the relief method.As a member of the Continental Law System,China,when making its Contract Law, has transformed the Einrede der Unsicherkeit established by this system,and adopted some reasonable part of the Anticipactory breach of contract of the British -American Law system.By doing so ,it has not only solved the realistic problems commonly existing in our market economy,but also been of great significance to the legal construction of our country .