本文的主旨，是透過閱讀蔡培火，試圖去了解日治時代台灣人的身份意識。從蔡培火的文字中我們可以知道，身份認同的論述是可以超越國家與民族的窠臼。蔡培火從王道樂土的概念出發，指出當時日人治台之不合理性，而從台灣議會設置運動等等的政治參與的過程中，他同時也了解到台灣的主體意識之崛起；雖然運動的結果是失敗的，但對於民智之開化卻有不可抹滅之作用。而蔡培火不只是作為一個島內人，同時也作為一個留日學生，他在日留學期間，接觸到了王道樂土的思想。對於蔡培火來說，那正是解決日本人與台灣人身份認同的出路，直接跳過低層次的論述，從「東亞」，不僅可以解決日本本國與台灣島的緊張對峙關係，更可以成為東亞和平的橋樑。

The main purpose of this paper trying to understand identity consciousness of Taiwanese during the Japan-ruled period through reading Cai Pei-Huo. Form his view, we can know the discourse of identity can beyond be the limits of states and nations. He begins from the idea of "Oodoorakudo" criticize the policies of Japan. Though political participation in the movement of petition for Council, he also noticed that the rise of Taiwanese consciousness. Although the movement failed, it still had enormous effect upon Taiwanese consciousness. Cai Pei-Huo not only as a Taiwanese, but also as a foreign student in Japan. During his study at Japan, he was aware of the idea of "Oodoorakudo", which is the way to solute the different concept of Japan and Taiwan identies for him. Through the identity of "East-Asia", it can mitigate the tension between Japan and Taiwan Island, become the bridge of peace in East-Asia.