The flora of Bach Ma National Park is highly diverse and rich. Around Bach Ma National Park, ther are about 6500 people with about 2,000 ethnic people belong to the Van Kieu and Co Tu minority ethnic groups. Exploitation and use of medicinal plants for medical and health care are popular in these two ethnic groups. Here, the survey result showed that knowledge in using medicinal plants of the Van Kieu and Co Tu people is very diverse in species composition (Co Tu people use 249 species, the Van Kieu 27 species), in life forms (61.0 percent herbaceous, tree wood, dust, 39.0 percent), in use of parts (stems, Ieaves, 77 species, accounting for 31 percent, 73 species of both plants accounted for 30 percent
roots 68 plants accounted for 28 percent, 15 fruit trees accounted for 7 percent, other 9 parts plants 4 percent) and also diverse in disease groups (11 groups). Based on the knowledge, the authors has also announced 11 plant species as new medicinal plants (Huperzia serrata (Thumb.) Trevis., Curculigo gracilis (Kurz.) Hook. F, Morinda longifolia Ophiopogon reptans Hook. F., Achyranthes aspera L., Mallotus barbatus (Wall.) Muell.- Arg., Ra verticillata (Lour) BailL, Bischofia javanica Blume, Spatholobus harmandii Gagn., Strychnos walli, wallichiana Steud ex DC., Eriocaudon sexangulare L.), 6 species can be used in various diseases (Achyranthes, aspera L., Rauvolfia verticillata (Lour) BailL, Hedyotis corymbosa (L.) Lamk., Utsea cubeba (Lour.) Rers Gleditsia autralis Hemls. ex Forbes & Hemls., Dioscorea persimilis Prain et Burk.).