This study is for finding out the formation and the reality of Tamahu Clan of Bunun Tribe and build up the tribal history of Tamahu clan through their transition and development of the clan. The cultural content of the clan will be used to understand the experience and routes of migration among different families within Tamahu clan. This will be served as the trace for their roots and to determine the process of change of the ritual and culture of Tamahu clan. This will also serve to provide the direction of the restoration of traditional culture. The Christian believes of the Tamahu clan, their conversion and development are analyzed to find out how the church had become faith center of the clan and how the ritual events affect the lives and values of the clansmen. It is also useful to find out the connection between the function and effects that linked to the culture change of the clan. The social culture of Tamahu clan changes with the historical environment of different ages. Through this, we cut into related cultural level and analyze the social and culture development and phenomenon.
