This article presents the results of the preliminary research on vegetation types of Thac Tien - Deo Gio natural forest, Xin Man district, Ha Giang province. The results of this research showed that the vegetation in the study area can be classified and characterized by nine major formations and three subformations, including: (1) Tropical evergreen seasonal submontane forests. | Vegetation types in Thac Tien - Deo gio natural forest of Xin Man district, Ha Giang province