Abstract: The fourth ecological demonstrative area of China--Lishui Ecology Demonstrate Area, which was approved to be set up by the state council in the end of 1999. The rich of plant resource owes to its complicated land forms, well reserved original and sub original forests and well-protected environmental ecology. According to many year's investigation and statistics to the collected, there are 206 families 940 genera and 2881 species of vascular plants of which the amount and species of Pteridophytes are only second to Taiwan and Hainan provinces in the east plant of China. Dryopteris and Arachniodes's plants are especially thought to be the center in distribution in our country, and the species and amount of seed plants are obviously superior to the neighbourhood. In the area, plenty of valuable and rare plants are in imminent threatened. The flora origin traces back early, many of whose families, genera and relic species are ancientry, and the flora elements are complicated coming from varieties of geographical types. The geographical distribution has relations with the other parts in the formation in the world.