In recent years, under the pressure of economic development and population explosion, that forest resources in general, especially resources of medicinal plants are severely degraded. Therefore, the investigation and study diverse resource of medicial of ethnic Tay, Diem Mac commune, Dinh Hoa district, Thai Nguyen province is a extremely important and significant work in the management and conservation. Initial research, the authors collected 127 species, 108 genera, 60 families of 4 branches of vascular plants: Lycopodiophyta, Polypodiophyta, Equisetophyta, Magnoliophyta
of which there are 7 of rare plants should be preserved.