Cangxi County, which belongs to Guangyuan City, Sichuan Province, is located in the northern margin of Sichuan Basin, the southern foot of Daba mountain in the low and Zhongshan hilly region, between 31°37 '-- 32°10' north latitude, 105°43 '-- 106°28' east longitude, between 31° 43 '-- 106°28' east longitude. Cangxi County belongs to the subtropical humid monsoon climate zone. Cangxi County covers an area of 2334 square kilometers, jurisdiction over 31 towns, 454 villages (communities), the county people's government in Lingjiang Town. According to the seventh census, Cangxi County had a permanent population of 51,617 as of midnight on November 1, 2020.

Cangxi County was called "Qinlong Suokey", "Shu Bei Pingfan", because it is located in Cangxi Valley and named. In the sixth year of Taikang of the Western Jin Dynasty (285), Cangxi County was divided in Langzhong County, Basi County, and the county administration was located in Nongtan Village (also known as Xianba), Lingjiang Town. On September 9, 1985, The State Council approved the transfer of Cangxi County from Nanchong to Guangyuan City. Since January 1986, Cangxi County has become a county of Guangyuan City. Within the territory of G212 national road, G75 Lanhai high-speed, Lanzhou-Chongqing railway through the border. Cangxi County is the national modern agriculture Demonstration County, the hometown of China's snow pear, the hometown of China's red heart kiwi. There are Bailu Lake National Water Conservancy Scenic Spot, Sanxikou (Yudai Gorge, Wudang Mountain) National Forest Park, Tingzi Lake Municipal Scenic Spot, Jiulongshan Provincial Nature Reserve and other scenic spots.

In 2020, the GDP of Cangxi County reached 17.976 billion yuan, an increase of 3.8 percent, 1.5 percentage points higher than the national average.
In February 2020, the Sichuan provincial People's Government agreed to remove Cangxi county from poverty.