Qidong City is a county directly under the financial control of Jiangsu Province. Jiangsu Province is a county-level city under the jurisdiction of Nantong City, which is located at the southeast end of Jiangsu Province, on the north bank of the Yangtze River estuary, and is the earliest place for sunrise in Jiangsu Province. As of October 2021, Qidong has 9 towns under its jurisdiction. The total area is 1208 square kilometers. In 2021, Qidong will have a total registered residence population of 1087400 and a permanent population of 961500.

In the fifth year of the late Zhou Xiande (958), Haimen County was set up in Dongbuzhou, under the jurisdiction of Tongzhou. The territory of Haimen County includes the central and northern areas of today's Qidong. In the seventeenth year of the Republic of China (1928), due to the continuous eastward extension of the sandbar, Qidong County was set up in the sand outside Chongming County, taking the meaning of "opening our eastern frontier". In 1989, Qidong County was abolished and a county-level Qidong City was established. Qidong is a national open port, the hometown of Chinese architecture, the national health city, the national garden city, the national civilized city, the national ecological demonstration area, the county that meets the standards for the construction of water-saving society, the pilot county for the construction of a compact county medical community, the county for the protection and utilization of revolutionary cultural relics, the town of marine economy, the town of electric tools, the town of architecture, the town of education, and the town of prints.

In 2021, Qidong's GDP will reach 134.594 billion yuan, an increase of 8.4% over the previous year at comparable prices. In terms of industries, the added value of the primary industry is 8.866 billion yuan, and the added value of the secondary industry is 65.696 billion yuan; The added value of the tertiary industry was 60.032 billion yuan, and the tertiary industrial structure was adjusted to 6.6:48.8:44.6.