Pu 'an County is under the jurisdiction of Qiannan Buyi and Miao Autonomous Prefecture of Guizhou Province, 89 kilometers away from Xingyi City. Located in southwestern Guizhou Province, the county's name means "Under heaven, all living beings live in peace."

The total area of the county is 1453 square kilometers; In 2015, it had jurisdiction over 2 subdistricts, 8 towns, 2 townships, and Panshui Subdistrict, the seat of the county; It has an area of 254,000 mu of cultivated land and is inhabited by more than ten nationalities such as Han, Miao and Buyi. According to the seventh census, the permanent population of Pu 'an County was 242,958 as of midnight on November 1, 2020.

Pu 'an County has 46 rivers, water energy theoretical reserves of 270,000 kW; There are 28 kinds of coal, gold, iron, silicon, lead, zinc and so on. Pu 'an County has more than 20,000 of the oldest four-ball tea trees in the world, making it "the hometown of ancient tea trees in China".

On March 3, 2020, Pu 'an County was removed from the list of poverty-stricken counties, realizing poverty alleviation. In 2020, the GDP of Puan County reached 10.02 billion yuan, an increase of 4.5% over the previous year.