Spanning an area of 1,439 square kilometres (556 sq mi), Qianxi County is largely agricultural, despite being part of the Jing-Jin-Ji metro region.

[2] A number of brick kilns used in the construction of the Ming Great Wall are located within Qianxi County.

[2] The area saw major fighting during the Japanese invasion of China, involving a number of Chinese generals such as Song Zheyuan and Zhang Zizhong.

[2] The area is mostly rural, and 63% of the county is forested, the second largest proportion among county-level divisions in Hebei.

[2] Qianxi County administers 1 subdistrict, 12 towns, 5 townships, and 1 township-level industrial zone.