Qushui County, under the administration of Lhasa City, Tibet Autonomous Region of the People's Republic of China, is located in the hinterland of Tibet, the lower reaches of Lhasa River and the north bank of the middle reaches of Yarlung Zangbo River. It belongs to the valley area of the middle reaches of Yarlung Zangbo River. Most of it is relatively flat and has a temperate semi-arid climate. Qushui County covers an area of 1624 square kilometers. As of October 2021, Qushui County has jurisdiction over 2 towns and 4 townships. According to the seventh census, as of midnight on November 1, 2020, the permanent population of Qushui County was 41,851.

Qushui, known as "Ji Mai" in ancient Tibetan language, means "land where rivers meet". Since ancient times, it has been a transportation hub connecting Lhasa with Shannan, Nyingchi and Shigaze regions. It was established as a county in 1959. In 2016, Qushui County was listed as the second batch of national comprehensive pilot areas for new urbanization. In October 2018, the People's Government of Tibet Autonomous Region officially approved Qushui County's withdrawal from poverty.

In 2018, the GDP of Qushui County reached 1.687 billion yuan, an increase of 9.0 percent over the previous year based on comparable prices. On December 6, 2019, it was selected as a pilot unit to promote the quality improvement of farmer cooperatives in the whole county. On December 31, 2019, it was selected as a national typical county for rural innovation and entrepreneurship.