Tày and Nùng people in Vietnam belong to the Tày - Thái linguistic group, so they have similar characteristics of language, customs and habits. These peoples have close relations with the other races in the Tày - Thái linguistic group. The author researches the changes of shamans (wizard) who are the main characters in the spiritual life of Tày and Nùng people in comparison with Thái people in the Northwest of Vietnam and Zhuang people in Guangxi, China.