Abstract: Zoige wetland is not only the largest plateau peat bog in the world,but also one of biodiversity conservation hotspots in China.There are 414 vascular plant species of 165 genus,50 families;137 bird species of 28 families 13 orders;38 beast species of 15 families,5 orders;3 amphibian species of 2 families,1 order;3 reptile species of 3 families,2 orders;and 15 fish species of 2 families,1 order in the Reserve.Among them,there are 3 secondary state-protected plant species and 5 endemic plant genus in China.There are 7 first rank state-protected bird species and 20 secondary rank state-protected species,in which 7 bird species are endemic in China.There are 1 first rank state-protected beast species and 7 secondary rank state-protected species in the Reserve,in addition,6 species are endemic in China.In the paper,5 evaluating ingredients i.e.biodiversity,rarity,endemism,stability and security of ecosystem,area suitability and natural property,and their 17 affiliated indicators were employed to integrally survey its biodiversity quality.Its total score is 73.5,which indicates that the Reserve possesses sound biodiversity and is highly worthy of being protected.