Longzi County, under the jurisdiction of Shannan City, Tibet Autonomous Region of the People's Republic of China, is located in the south of Shannan City, the eastern part of the northern foot of the Himalayas; It borders Lang County and Jiacha County in the north, Menyu County in the south, Luoyu County in the east, and Cuomei County in the west, Qunna County in the southwest, Qusong County in the north, Naidong District of Shannan City in the northwest, and Milin County in the northeast. Its geographical location is 91°53 '-- 93°06' east longitude, 28°07 '-- 28°52' north latitude, an area of 10,566 square kilometers, the actual control area of 8,165 square kilometers. As of 2018, Longzi County has jurisdiction over 2 towns and 9 townships. According to the seventh census, the permanent population of Longzi County was 33,570 as of midnight on November 1, 2020.

In 2019, the GDP of Longzi County reached 1.283 billion yuan, up 4% year on year; The investment in fixed assets reached 1.585 billion yuan, down 15.1% year on year; Fiscal revenue reached 85 million yuan, down 20.8% year on year; The tax revenue was 140 million yuan, down 21.3% year on year; The total retail sales of consumer goods reached 166 million yuan, up 13.2% year on year; The per capita disposable income of rural residents reached 13,450 yuan, up 15 percent year on year.
On February 6, 2019, the People's Government of the Tibet Autonomous Region decided to withdraw Longzi County from poverty. The third batch of practice and innovation bases "lucid waters and lush mountains are invaluable assets".