Abstract: Sogo Yamaga is a critical link in the history of Japanese thoughts, inheriting ZhuXis philosophy and establishing Kogaku. He is a nonmainstream philosopher though, due to the complexity of his thoughts. On the whole, Soko Yamagas thought consist of Shidouron, Seigaku, and Nihonchuuchoushugi. Although different parts present distinct academic focuses, they show a purpose of reconstructing Japanese subjectivity from the perspective of his ideological structure. To be specific, it can be found that while the Japanese subjectivity necessitates the nutrition of Chinese thoughts, the critical point of an independent Japanese subjectivity can only be obtained through dethatching the Chinese ideological influence, which is the gradual maturing of the Japanization of Confucianism. Meanwhile, the diversion of Soko Yamagas justifying Koutou with Jindai reverberates with Japanese Kokugaku, which is a methodological attempt at constructing Japanese subjectivity.

Key words: Soko Yamaga, history of Japanese thought, subjectivity, criticality, diversion