With the deepening of practice in contract, anticipatory breach was firstly created by countries of Common Law System in terms of prejudication. Rules, similar to anticipatory breach, were gradually accepted by countries of Civil Law System.CISG broke through the traditional model of anticipatory breach and classified it as subordinate anticipatory breach and fundamental anticipatory breach. The Contract Law of the People＇ s Republic of China has formally accepted anticipatory breach. However, there are still some defects：the illogicality of the system; the indeterminacy of essence ; the unspecification of standard of judgement; the incompleteness of relief measures, etc.To perfect anticipatory breach in Chinese Contract Law, it is necessary to study CISG.