Hmong people belong to the Hmong - Yao language branch, the South Asian language family, is one of the ethnic minority groups which has a large number of population among ethnic groups in Vietnam. Hmong people have the slow migration and settlement process compared to other ethnic groups in our country. They are located mainly in some highland provinces: Ha Giang, Tuyen Quang, Dien Bien, Lai Chau, Cao Bang, Lang Son, Lao Cai, Son La, etc. and in the western mountainous region of Thanh Hoa and Nghe An provinces. Hmong people in Thanh Hoa reside mainly in three districts: Muong Lat, Quan Son and Quan Hoa. Most of them come from other places in the northern mountainous areas, migrating through two direct ways. Essentially, Hmong people in Thanh Hoa have a high sense of ethnicity and also maintain many traditional cultural features which contribute to enlivening the colorful picture of ethnic culture of Xu Thanh.