In 2010, the Kampala Conference completed the amendments of the Rome Statute on the definition of crime of aggression and the mode of jurisdiction. However, the pattern of jurisdiction over the crime of aggression is inconsistent with the Rome Statute until the International Criminal Court is about to formally initiate the jurisdiction on the crime of aggression in 2018, although the issue is always pending. This thesis will first introduce the fragmentation of international law, then analyze the causes behind the issue of jurisdiction over the amendment to the crime of aggression along with the positions of all parties, finally through the view of fragmentation in international law to respond to it.