Abstract: There are 33 species (including varieties and subspecies) of the rare and threatened plants in Mt.Sanqingshan,which belong to 30 genera and 22 families.Among them,1 species,1 genera and 1 family represent the fern;12 species,12 genera and 6 families represent the gymnosperm;20 species,17 genera and 15 families represent the angiosperm.This paper mainly discusses the geographical distribution and protection of the rare and threatened plants.