Da County (Da County) generally refers to Dachuan District
Dachuan District, under the jurisdiction of Dazhou City, Sichuan Province, is located in the south of the main urban area of Dazhou City, and is located in the connection zone of parallel ridge valley area, mid-basin hilly area and peripelvic low mountainous area in the eastern basin of Sichuan Province. The general trend of topography is higher in the northwest and lower in the southeast, belonging to the monsoon humid climate type of the Middle subtropical zone. Jurisdiction over 26 towns, 5 streets, a total area of 2245 square kilometers. According to the seventh census, as of midnight on November 1, 2020, the permanent population of Dachuan District was 899,728.

Dachuan District has a long history and profound cultural heritage. There were many famous historical figures, such as Chun Shen Jun, one of the "four sons of the Warring States", Yuan Zhen, the Tang Dynasty's master horse of Tongzhou, Wei Chengfang, the high Official Board of Officials in the Ming Dynasty, and Tang Zhen, an outstanding thinker in the Qing Dynasty. Unique location, convenient transportation. As the junction of Sichuan, Chongqing, Hubei and Shaanxi, Dachuan is located in the intersection and radiation center of Chengdu, Chongqing, Xi 'an and Wuhan; It is an important gateway of northeast Sichuan and an important part of Dazhou City. Xiangyu, Dadan, Daba and Daba railways crisscross the border, and Daba, Daba and Daba - Shaanxi expressways pass through the border. In March 2019, it was selected into the list of the first batch of counties under protection and utilization of revolutionary cultural relics; In November 2019, it was named "National Agricultural Product Quality and Safety County". On April 28, 2019, Sichuan Provincial People's Government decided to withdraw Dachuan District from the poverty-stricken county list.
September 22, 2020, won the 2019 Sichuan Province grain production "Harvest Cup".
In 2020, the total GDP of Dachuan District was 36.36 billion yuan.