The Qinghai－Tibet Plateau is located in the southwest of China,with an area of around 2,300,000 square kilometers and an average altitude of over 4000 meters . It is regardded as to(It is called) "the roof of the world ."①The Qinghai－Tibet Plateau has rich natural resources ，beautiful landscapes and multiple rare wild animals.②There are rich natural resources ，beautiful landscapes and multiple rare wild animals in the Qinghai－Tibet Plateau .③With rich natural resources ，beautiful landscapes and multiple rare wild animals ，the Qinghai－Tibet Plateau has multiple rare wild animals .A large area of mountain glaciers were formed because of extremely low temperature in the Qinghai－Tibet Plateau.Here is the origin of many famous rivers and main fresh water supply of China and southeast Asia .The Qinghai－Tibet Plateau is crucial for global ecosystem. Due to the influence of climate change,the glaciers of (in)the Qinghai－Tibet Plateau is melting in an accelerating speed .China has been making great effort to protect the ecosystem of the Qinghai－Tibet Plateau,the coverage rate of the grassland is increasing constantly,many endangered species have been protected more effectively.