Dazhu County is subordinate to Dazhou City, Sichuan Province. It is located in the east of Sichuan Province and the south of Dazhou City. Dazhou is the sub-center of economy and city. It is adjacent to Liangping District and Dianjiang County of Chongqing in the east, Guang 'an and Shui County in the south, Guang 'an District and Qu County in the west, and Dachuan District in the north. It covers an area of 2,078.79 square kilometers and has a permanent population of 838,500 at the end of 2021. By the end of 2021, it has jurisdiction over 3 subdistricts, 23 towns and 5 townships.

In ancient times, Dazhu County was a nationality territory. It was finally established in the third year of Datong in Southern Liang Dynasty (AD 537). In the first year of Wu Zetian's reign in Tang Dynasty (AD 700), it was finally established in Dazhu County. In December 1949, Dazhu was liberated and belongs to the Dazhu special area of the eastern Sichuan administrative District. In February 1953, Dazhu Special Area was abolished and changed into Daxian Special Area. In January 2000, the city of Dazhou was withdrawn.
Dazhu County is one of the top 100 counties in western China, a national civilized city and a national health county. It has been included in the contiguous poverty alleviation Development Zone of Qinling-Ba Mountains, the Development Zone of Chengdu-Chongqing Economic Zone and the Northeast Sichuan City Group. Located in the eastern hilly area of Sichuan Basin, subtropical humid climate; Within the territory of Wufeng Mountain National Forest Park, a combination of Sino-European architectural complex Qinghe Ancient Town and other cultural landscape. Da Yu Expressway, 318 National highway, 210 National highway and South Daliang Expressway is a "well" font criss-cross throughout the territory.

In 2021, the gross domestic product (GDP) of Dazhu County was 42.12 billion yuan, an increase of 8.4 percent, and the added value of the primary industry was 7.09 billion yuan, an increase of 7.7 percent; The added value of the secondary industry was 16.28 billion yuan, up by 5.8%; The value added of the tertiary industry was 18.75 billion yuan, up by 10.6%. In 2021, the built-up area of Dazhu County in Sichuan Province reached 29.6 square kilometers, and the urban population increased to 303,000.