日本的世界觀核心──「亞洲學」(アジア研究，包括東洋學、東亞學等概念)作為日本近代發展的關鍵性思想，對於日本國族的建立起了關鍵性的作用。亞洲學從戰前對「中國學」的衍生物，戰後因為軍事色彩，亞洲學在日本中國學界中長期無聲，而現在卻是日本用以與世界對話的重要基礎概念。本文藉由對日本思想界中亞洲學所承載的觀念的研究，整理作為思想系譜的亞洲學歷史，用以說明戰後亞洲學呈現的特色以及與戰前亞洲學的不同。亞洲學的系譜有三點核心意識:作為日本民族自身的投射;作為日本藉以對「內/外」對話的知識體系;將亞洲視為空間性存在。亞洲學不但是日本用以與西方對話的產物，其本身正是東西方文化對話的產物，藉由對此呈現的學術考察，也就能更明白東西方百年的互動軌跡。

Japan’s core weltanschauung, “Asian Studies”, as keywords in Japanese philosophy during recent development, has an instrumental effect on the establishment of the Nation of Japan. Asian Studies evolved from China Studies after the War. As the military did not have an influence on Japan’s China Studies after the War, it is now an important basis for Japan’s conversation with the rest of the world. This article intends to produce a genealogy of Japan’s Asian Studies to explore the characteristics of the Asian Studies after the war and how they differ from those before the war. There are three core grounds in the genealogy of Japan’s Asian Studies: as a reflection of the nation of Japan; as the ontology of inside and outside dialogues; and as an existence. Asian Studies is not only a product of dialogues between Japan and the West; it is also a product of dialogues between the East and the West. We will be able to understand the interactions between the West and the East through this research paper.