进入21世纪以来，日本再次掀起了强劲的宪法修改运动。这一运动虽然暂时以日本政府修改宪法第9条解释的方式告一段落，但它所涉及的诸多问题远未得到解决。这是因为，日本宪法的创制最初就超越了民族国家框架的范围，具有一种世界属性，因而它所设定的课题只能在一种新的世界体系下得到解决。日本宪法创制的历史过程及其当代意义需要在新世界主义的视角下进行重新解释，这种解释反过来也构成了新世界主义的理论框架。

The Japanese society has seen a powerful movement of constitution amendment since the 21^st century. Although this movement temporarily ended with Japanese government's reinterpreting the Article 9 of the Japanese Constitution, the problems involved have not been settled yet. The reason is that the Japanese Constitution has a worldwide significance since its initial creation was beyond the framework of a nation-state. Therefore, its problems can only be solved in a new cosmopolitan system. Accordingly, its historical process and contemporary significance need to be reinterpreted from the perspective of a new cosmopolitanism, and such a reinterpretation will benefit the theoretical construction of a new cosmopolitanism in turn.