Abstract: Longgong area is located in Anshun City of Guizhou Province.The altitude is from 1200m to 1450m above the sea level. Based on floristic analyses on vascular plants from the area,the authors get the following general conclusions.1.Campared with other area,taxa are richer.They include 204 species,155 genera,and 80 families.2.The flora are mixed between temperate and tropical elements.3.Subtropical characteristics are obvious.4.Endemic species are rich.5.There are rare species in most genera.6.It is a part of Sino-Japon Flora.