Yi people's religious belief is still in the primitive religious stage, and the concepts of nature worship, totem worship, ancestor worship and animism are widespread in society.

"Bimo", a priest and "Suni", a wizard of this nationality, have a certain influence in Yi areas, especially in Liangshan areas adjacent to Sichuan and Yunnan.

In Yunnan, Guizhou, Guangxi and Yi areas, Taoism and Buddhism are popular in some areas besides the original religious beliefs inherent in the nation. Since modern times, Christianity and Catholicism have also been introduced into the Yi minority areas.