Mianzhu, a county - level city in Sichuan Province, is administered by Deyang City. It is a pilot city of national development and reform, a pilot city integrating multiple plans in the "13th Five-Year Plan", a resource-mature city, a demonstration county of leisure agriculture and rural tourism, a demonstration city of beautiful environment and a demonstration county (city) of strong industry in Sichuan Province, and a key county for the overall promotion of new rural construction. According to the seventh census, as of midnight on November 1, 2020, the permanent population of Mianzhu was 439,958.

Mianzhu is known as one of the "seventy-two holes of heaven Blessed Land", belongs to the subtropical humid climate zone of Sichuan Basin, is the origin of the Tang Dynasty tribute tea Zhaopo tea, the famous Chinese wine Jiananchun, is also the birthplace of one of the four Chinese New Year pictures - Mianzhu New Year Pictures, the Jiudingshan Mountain within the territory is the main part of the national Geopark "Wolong - Si Girl Mountain Giant Panda Ecological corridor". On January 9, 2019, it was selected into the list of "Towns of Chinese Folk Culture and Art" from 2018 to 2020 by virtue of New Year pictures. The top 100 counties and cities in Western China.