Hengnan County, belongs to Hengyang city, Hunan Province, three sides around Hengyang city, and Yan Feng, steam Xiang, Zhu Hui, stone drum four cities connected, Hengshan, Hengdong, Anren, Leiyang, Changning, Qidong, Hengyang 8 counties as neighbors, a total area of 2619 square kilometers. It has jurisdiction over 3 subdistricts, 19 towns and 1 township.

Hengnan has a long history, from the west Han Gaozu five years (202 years ago) was built in the county, to Qing Qianlong 21 years (1756) analysis of southeast Hengnan County set up Qingquan County, county set up state, analysis county set up house, zoning city, several easy name, was built in July 1952 Hengnan County, has more than 2000 years of history. Within the territory of Jiangkou Bird Island, Qishan Forest Park, Lianhu Bay National Wetland Park, as well as known as the "Hengyang first ancestral temple" ancestral hall of the Wang family and other scenic spots. Is "poetry magic" love, playwright Haiyan hometown.

By the end of 2021, Hengnan County resident population 798,100. In 2021, Hengnan County achieved regional gross product (GDP) 38.738 billion yuan, among which, the value added of the primary industry 7.165 billion yuan, the value added of the secondary industry 13.719 billion yuan, the value added of the tertiary industry 17.855 billion yuan, three industrial structure ratio of 18.5:35.4:46.1.