We are constantly arguing about war and peace. We are getting many inspirations from Kant's perpetual peace about war and peace. Therefore this thesis is to analyze kant's perpetual peace and to study the political viewpoint of kantism. It is important not only to study kant's perpetual peace but also to investigate realizable possibility of perpetual peace in international community. Kant hopes to realize this plan on the basis of the preliminary articles as well as the definitive articles in the near future. Kant described his proposed peace program as containing two steps. The Preliminary Articles described the steps that should be taken immediately, or with all deliberate speed. Three Definitive Articles would provide not merely a cessation of hostilities, but a foundation on which to build a peace. Kant's perpetual peace has an important significance with political thoughts which are moral philosophy, state philosophy, law philosophy, etc. Kant's perpetual peace have effects on international organizations such as League of Nations, United Nations, European Union. As well as, a lot of states should select the constitution for peace. However It has limitations which are international political structure for war and peace, peaceful system between universal and domestic. Of course, Kant's perpetual peace can not deny gave a lot of influences in international politics.