Hoh Xil (kě kě xī lǐ 可可西里) is situated at the Yushu Tibetan Autonomous Prefecture(yù shù zàng zú zì zhì zhōu 玉树藏族自治州) in southwest Qinghai, and has an average altitude of more than 4600 meters. Low temperature, rare rainfall and strong wind are the major features of Hoh Xil. However, in such a fierce land, there are many animals which can only be seen on highland. According to the present observation, there are 29 kinds of mammals, 53 kinds of birds and 202 kinds of plants, of which 84 are the unique ones on Qinghai-Tibet Plateau. The importance and charm of this area is becoming more and more famous throughout the world, and the great significance in scientific research is irreplaceable in China and the world.