From 1895 to 1945, Taiwan was governed by Japan totaling fifty years. Japanese monitored Taiwanese society through various kinds of colonial strategies. During this period, they recruited the Taiwanese elite as local monitoring agents mainly using the police and Pao-Jia institution. Meanwhile, the Japanese also eliminated large numbers of revolutionary movements and revolutions. This report examines Japanese policy and management during the period of Japanese government through postcolonial discourses. The most obvious difference between “colonization” and “postcoloniality” lies in the core content. For the core content post-colonial scholars, “the identity of the colonized is a kind of construction and a sort of outcome made by military force and culture-transfer”. Post-colonial scholars put emphasis on how to find the specification of self-culture through the experience of the past history. Furthermore, this report examines the meaning of post-colonization during the period that Japan governed through such concepts, as “the other”, “hybridity” and “internal coloniality”. The purpose of this report is to give a different explanation for the historical period of the Japanese government of Taiwan.