Zhangjiakou is a fourth-tier city, also known as Zhangyuan and Wucheng. It is a prefecture-level city under the jurisdiction of Hebei Province. It is located in the northwest of Hebei Province, at the junction of Beijing, Hebei, Shanxi and Mongolia. It is the intersection point of the Beijing-Tianjin-Hebei (Bohai Rim) economic circle and the Hebei-Shanxi-Mongolia (Outer Great Wall) economic circle. It is the central city in northwest Hebei and a transportation hub connecting Beijing and Tianjin, as well as Shanxi and Inner Mongolia.

Zhangjiakou is located in the northwest of Hebei Province, with east longitude 113° 50′~ 116° 30′ and north latitude 39° 30′~ 42° 10′. It borders the capital Beijing to the east, Datong to the west, the Inner Mongolia Plateau to the north, and the North China Plain to the south. The city is 289.2 kilometers long from north to south and 216.2 kilometers wide from east to west, with a total area of ??36,800 square kilometers and a total population of 4.8732 million. As of 2017, Zhangjiakou has 10 counties (Zhangbei, Kangbao, Guyuan, Shangyi, Yuxian, Yangyuan, Huaian, Huailai, Zhuolu, Chicheng) and 6 districts (Qiaodong, Qiaoxi, Xuanhua , Xiahuayuan, Chongli, Wanquan).

Abundant natural resources. As of the end of 2017, 97 mineral species have been discovered in the city, and 57 mineral species have proven resource reserves; wind energy resources are abundant, with reserves exceeding 20 million kilowatts, making it the first region in China approved to build a double million kilowatt wind power base; geothermal resources Among them, Akagi Hot Spring and Huailai Geothermal are famous throughout the country.