This study aims to document the traditional medicinal plants used by Wancho tribe of Arunachal Pradesh. This study reveals the use of 13 species of medicinal plants belonging to 12 genera and 12 families. Wancho tribe is the study area used majority of plant to treat stomach related ailments 33.33% followed by other common problems like cuts wounds, fracture etc. Due to changes in the religion and modern way of life this knowledge is disappearing fast and needs to be documented.