This study focuses on the changes in Kairyoubanoku (ameliorate house) from 1920s to 1960s. Kairyoubanoku was a new type of dwelling plan proposed by Japanese policy at that time. According to the plan, the house was divided into three parts: a living room in the middle, two bedrooms on the sides. Comparing the Xiuguluan Amis and East Coast Amis, there are some differences because of their location and transportation conditions. In the case of Xiuguluan Amis, due to the good transportation, Han and Japanese easily accessed to the area. Their influences began to appear early and the construction of Kairyoubanoku was carried out already in 1920s. On the other hand, in the case of East Coast Amis, their traditional roof truss existed up until 1960s. This study points out that Amis' Kairyoubanoku was a mixture of Amis, Han, Japanese people's dwelling skill, room proportion etc.. These can prove the complexity of Amis' dwelling type and technique.
