Yuxian County is subordinate to Zhangjiakou City, Hebei Province. In ancient times, it was called Yuzhou and one of the "sixteen states of Yanyun". It is located in the northwest of Hebei Province, bordering Beijing in the east, Baoding in the south, Datong in Shanxi in the west, and Zhangjiakou in the north. The total administrative area is 3220 square kilometers. As of January 2021, Yuxian County has a total population of 500000.

Yuxian is a national historical and cultural city. During the Tang and Yao Dynasties, Yuxian belonged to Jizhou. In the early Qing Dynasty, it belonged to Datong Mansion in Shanxi Province. In the 32nd year of Kangxi's reign in the Qing Dynasty (1693), Wei of Yuzhou was changed to Yu County (the name of the county has been since then), which was subordinate to Xuanhua Prefecture. In the first year of the Republic of China (1912), Yuzhou was under the jurisdiction of Zhili in the north of Shengkou. In the 17th year of the Republic of China (1928), it was transferred to Chahar Province. After the founding of New China, Yuxian County was exclusively owned by Chanan, Chahar Province. In 1952, it was later put under the jurisdiction of Zhangjiakou Special District and Hebei Province. On July 9, 1961, Yangyuan County and Xuanhua County were restored, while Yuxian County was restored to its current jurisdiction. As of October 2021, Yuxian County has jurisdiction over 11 towns and townships; The county people's government is located in Yuzhou Town.

In 2020, Yuxian's GDP, total fiscal revenue, general public budget revenue, per capita disposable income of urban residents, and per capita disposable income of rural residents will be 8.41 billion yuan, 920 million yuan, 600 million yuan, 35259 yuan, and 12803 yuan respectively, up 1.0%, 0.2%, 7.4%, 4.1%, and 9.3% year on year.