Danyang City, a county-level city under the jurisdiction of Jiangsu Province and managed by Zhenjiang City, is located in the south of Jiangsu Province, between 31 ° 44 '- 32 ° 08' north latitude and 119 ° 23 '- 119 ° 53' east longitude, with a total area of 1047 square kilometers. Danyang is a subtropical monsoon climate with humid climate, sufficient sunshine, abundant rainfall, long frost-free period and four distinct seasons. As of 2019, Danyang has jurisdiction over 2 streets and 10 towns. According to the data of the seventh national population census, as of 0:00 on November 1, 2020, the permanent resident population of Danyang City was 988900, accounting for 30.8% of Zhenjiang City.

The establishment of Danyang began in the Warring States Period and was initially Yunyang. In the Book of Mountains and Seas, there is a river called "Danshui", that is, Danjiang. It is named after Danyang according to the theory of "mountains and rivers are yin and yang, and water north is yang". In December 1987, Danyang was removed from the county and set up as a city, which was managed by Zhenjiang City. At the junction of Danyang City and Xinbei District of Changzhou City, Changzhou Biniu International Airport is built. Shanghai-Nanjing Expressway (G42 Shanghai-Chengdu Expressway), National Highway 312, Provincial Highway 122 and Provincial Highway 338 are the main trunk roads to and from Danyang by highway. The Beijing-Hangzhou Grand Canal runs through Danyang by water transportation. Dagang Port is the third largest port of the Yangtze River open to the outside world.

In 2019, the gross regional product of Danyang was 112.199 billion yuan, up 4.7% year on year. In December 2018, it was selected as one of the top 100 comprehensive competitiveness of county economy in China, the top 100 best commercial cities in Chinese Mainland in 2018, and the top 30 best county cities in China. On October 8, 2019, it was rated as one of the top 100 counties and cities with comprehensive strength in 2019. In 2019, it was one of the top 100 counties in the country in terms of business environment. 2019 National Sanitary City. In December 2020, the Academy of Social Sciences released the National Top 100 County-level Economic Competitiveness, ranking Danyang as the 40th. In October 2021, it was selected into the list of "Top 100 Smart Cities in China in 2021".