Nigari Prefecture is the only region in the Tibet Autonomous Region. It is located in the southwest border of China, the west of the Tibet Autonomous Region, and the northern part of the Qinghai-Tibet Plateau (Qiangtang Plateau). With an area of ​​345,000 square kilometers, Nigari Prefecture is the second largest prefecture-level unit in Tibet, second only to Nagqu City.

Nigari Prefecture has 7 counties under its jurisdiction, with a total of 7 towns and 30 townships, 11 neighborhood committees and 134 village committees. The seat of Nigari Prefecture is Shiquanhe Town, Gar County.

Shiquanhe Town, located at the intersection of Shiquanhe and Garzangpo, is 4,255 meters above sea level and is located in the wilderness Gobi Desert. It is the seat of the Nigari Prefecture Administrative Office and Gar County Government, as well as a transportation hub, economic and cultural center, and border trade center.

It is the only way to Xinjiang and the transportation hub of the Xinjiang-Tibet Line, about 30 to 40 kilometers away from the Indian border.

Shiquanhe is more than 1,500 kilometers east of Lhasa and 1,100 kilometers north of Yecheng, Xinjiang. It is a prosperous place in a sparsely populated wilderness with a radius of more than 2,000 kilometers.

50 years ago, there were no ghosts in the place, but now it has developed into a population of more than 20,000, the largest town on the Ali Plateau.

The capital of Ali Prefecture in Tibet is Shiquanhe Town.