Jiayuguan City is a prefecture-level city under the jurisdiction of Gansu Province, located in the northwest of Gansu Province, in the middle of Hexi Corridor, bordering Suzhou District, Jiuquan City, an important town in Hexi, and 776 kilometers away from Lanzhou, the provincial capital. West to Yumen City, Jiuquan, an oil city, and 650 kilometers to Hami, Xinjiang; It is bordered by Qilian Mountain in the south and Sunan Yugur Autonomous County in Zhangye City. The northern pillow Montenegro is connected with Jinta County of Jiuquan City, and the middle part is the western edge of Jiuquan Oasis.

Jiayuguan City is the starting point of the western end of the Great Wall of Wan Li in Ming Dynasty, and it is a new regional central city of industrial tourism modernization due to the construction of "jiuquan iron and steel Company", a key project of the National First Five-Year Plan in 1958/kloc-0. Known as "the best gate in the world" and "the frontier locks the key". Jiayuguan City is one of the four prefecture-level cities without municipal districts in China.