Maoxian County, subordinate to the Aba Tibetan and Qiang Autonomous Prefecture of Sichuan Province, is located at the southeast edge of the Qinghai-Tibet Plateau in the northwest of Sichuan Province and the southeast of the Aba Tibetan and Qiang Autonomous Prefecture. It is located across the upper reaches of the Minjiang River and the Fujiang River, and is adjacent to the Beichuan Qiang Autonomous County, Anzhou District, Mianzhu City, Shifang City, Pengzhou City, Wenchuan County, Li County, and Songpan County, with a total area of 3903.28 square kilometers. According to the data of the seventh population census, as of 0:00 on November 1, 2020, the permanent resident population of Maoxian County was 95361. As of 2019, Mao County has jurisdiction over 11 towns, 149 administrative villages and 3 neighborhood committees. It is the largest Qiang county in the country. In addition to the Qiang nationality, there are also 17 ethnic groups, including the Han, Tibetan and Hui.

Maoxian County is a national cultural and ecological protection zone. On July 31, 2018, the Sichuan Provincial Government approved Mao County to withdraw from the poverty-stricken county sequence.

In 2020, the gross domestic product of Maoxian County will be 4302.48 million yuan, with an average annual growth of 3.2%; The local general public financial revenue is 2004.9 million yuan.