The Rome Statute, which entered into force in 2002, is not only the significant milestone of international criminal law-making, but also is the concrete practice of the ideal in the history of the international community to pursue justice.. According to Rome Statute, the court's main tasks are to accuse and adjudicate cases involved genocide, crimes against humanity, war crimes, and the crime of aggression. The series of tragic genocide events occurred in former Yugoslavia and Ruanda after the collapse of Cold-war order has accelerated the establishment of ICC. Particularly, the practices in international criminal trial of ICTY and ICTR formed a huge contribution in enhancing the theories of international criminal law either in substantive laws and procedural laws aspects; as this matter, this article intends to discuss the trend of Bargaining. Due to the international criminal tribunal deficient in trial procedure, how the procedural regulations be operated and what issues may rise, the practice of ICTY and ICTR could provide significant references. The cases of International criminal tribunal carry highly political characters, they are extremely sensitive in conflict zone, therefore the investigation has always faced quite obstructions. In order to investigate the truth of events under this unfriendly circumstance, it is spontaneously and cannot but to trade confessions of defendant by commuting the sentence. However the purpose of international criminal trial is to bring justice and to recover the peace in conflict zone; hence, the main point of the article is trying to find the reconciliation and balance for this matter.