Motuo, Xizang(Tibet), with the climate ranging from tropic to alpine frigid zone, has a comprehensive vegetational element pedigree with much high composition of the tropical flora in its Tracheophta and rich in plant diversity and endemics within a very fragile plant ecosystem. There are more than 80 species edible fruit species, 490 medicinal herbs, 250 arbour timber trees and more than 600 species of ornamental plants. Among them, 19 endangered species should be conserved properly.