從歷史變遷的角度，本文旨在探討東亞地區三種不同區域主義的發展。任何區域主義基本上都隱含相關家間特定的競爭與合作模式，因而亦隱含不同的利害得失關係。因此，這此國家間經常以區域主義為核心或方式，而展現各種聯合與衝突關係。 為提昇東協國家的政治自主性和促成經濟發展， 「東協主義」孕育於東西對抗的冷戰時代，卻在強調合作與諮商的後冷戰時代才快速發展。相對地，以美為主的先進國家卻強調全球化經發展的「亞太主義」，以重整後冷戰時儉的亞太政經秩序；而中共與日本在個別的戰略考量下，亦支持不同版本的「東亞主義」。 在這些區域主義的發展過程中，自冷戰時代即已展現強烈的的區域內海陸爭霸格局，顯然仍在後冷戰時代發揮其關鍵性的作用。臺灣的最佳策略，似乎仍須在東亞海陸爭霸的格局中，在安全上往美、日等海洋國家傾斜的同時，建構能兼顧或能平衡三種區域主義的科技產業分工關係。

　　　　　From a historical perspective, this article tries to analyze the formation and development of three sorts of regionalism in East Asia. Any regionalism obviously entails specific patterns of competition and cooperation among the related countries, and thus different interest to all of them. These countries collude and collide from one another accordingly when the regionalism forms, operates, and changes. In order to upgrade political autonomy and accelerate economic development of the ASEAN nations as a whole, Aseanism was originated in the presence of the East-West confrontation in the Cold-war ear, and expanded when economic cooperation and security consultation had been emphasized in the age of the Post Cold-war. Furthermore, while the U.S. and other advanced countries attempted to promote an Asia-Pacificism to rearrange the political and economic order in East Asia after the phase-out of the Cold-war, China and Japan respectively endorsed different versions of East-Asianism when they each had distinct strategic interest and considerations. The development of these sorts of regionalism had been conditioned by the hegemonic struggle between the continental world and the maritime world of the region in the Cold-war era; this impact seems to have still been there when the struggle obviously continues.