Abstract: History tells us that all peoples have religions as religion is inevitable to come into being when humans develop to a certain stage． Religion，in fact，is part of human culture． Religions of different peoples learn from each other，influence each other and develop along with each other． Neither culture nor religion can develop in isolation． Based on the above ideas，the present paper explores the possible relationship between two primitive religions the “bi” of the Yi people and the “ben”o f the peoples of Yi － Tibetan corridor．