Vietnam is a multi-ethnic country with 54 ethnic groups living together. In which, 38 ethnic groups have a population of over 10,000 people, 16 ethnic groups have a population of less than 10,000 people (very small ethnic groups). While ethnic groups with large populations mainly live in the midlands and plains, where living and production conditions are favorable; then mountainous areas, which account for nearly three-quarters of the country's natural area, are the main areas of residence for most ethnic minorities. So what needs to be done to ensure social justice, close to the development level of very few mountainous and downstream ethnic groups, and preserve the traditional culture of these peoples? On the basis of identifying the preservation of traditional culture of very small ethnic groups in Vietnam over the past time, the article offers some basic solutions to contribute to the preservation of traditional culture of very small ethnic groups in Vietnam in the next period.