Architectures were used as a crucial tool to change Taiwanese self-identity during the Japanese rule of Taiwan because architecture is closely related to people's lives. Although Japan is not the most prolonged colonial regime in Taiwan's history, there are still many traces of Japan left in life in Taiwan nowadays. Because the Japanese set the colonial blueprint more comprehensively on the entire Taiwan. Therefore, for different purposes, the types of buildings are diverse, and the scale of construction covers everything from urban planning to building material specifications. In this thesis, I will mainly study Japanese-style houses in Taiwan, which have accelerated the change of Taiwanese self-identity to a certain extent.