Abstract: Watsuji Tetsuro (1889-1960) is a wellknown Japanese ethicist, philosopher and ideologist, whose core ideas consist of two significant branches: Fudogaku and Rinrigaku. The publication of Rinrigaku which is as Ningengaku (1934) and Fudo——a study as ningengaku (1935) marked the initial shape of Watsuji Tetsuro’s thoughts. There is close relationship between Fudogaku and Rinrigaku. According to the initial statements of Fudogaku, the core structure of his philosophical thought remained intentionality, until the establishment of his ingenious concept of “Aidagara”, which switched the structure of Fudogaku from intentionality to Aidagara. However, Fudogaku and Rinrigaku of Watsuji Tetsuro still confront with numerous suspicion and issues. If Fudogaku is regarded as the thought which is produced by various nations and cultures, it would reflect the fundamental problems of the Rinrigaku.

Key words: Fudogaku, Rinrigaku, Ningen, Aidagara, the other