As global evolution accelerates and Sino-US relations’uncertainties increase，Japanese strategists have been continuously focusing on and discussing the international order’s transition. The outbreak of the Ukraine crisis has added a new variable to the international order’s transition，which brought Japanese strategists‘discussion into a new stage. On the one hand，most Japanese officials and think tanks believe that the United States remains dominant in the current Liberal International Order and hopes to strengthen its ideology and discourse system advocated by the current international. On the other hand，a few rational and pragmatic scholars，based on the theory of constructivism，believe that US unilateralism has drawbacks，and it is difficult for the US alone to maintain the current international order，which implies a new multi-polar system is unavoidable. At present，most Japanese strategists strongly exaggerate the confrontation between the East and the West，proclaiming China and Russia have eroded and weakened the liberal international order from behind and Japan needs to clarify its national security strategy. At the same time，Japan is also carefully studying the impact of the Ukraine crisis on the international order，intending to improve its political，economic，and military ability to reshape the international order.