Fexi County, affiliated to Hefei City, Anhui Province, is located in the southwest of Hefei City, east of the city of Shushan, Baohe District, Chaohu City across the Chaohu Lake, west of Lu 'an City, south along the Fengle River and Shucheng County, Lujiang County, Shou County, Changfeng County; County northwest high, southeast low, a north subtropical humid monsoon climate; The total area is 1695.41 square kilometers. By 2021, Fexi County has jurisdiction over 10 towns and 2 townships. By the end of 2021, the resident population of Fexi County is 978,200.

Located in the west of Hefei, Feixi is named after Chaohu Lake, the country's five famous freshwater lakes in the east, Sanhe Town, a thousand-year old water town, a famous Chinese historical and cultural town, a national civilized town and a national 5A scenic spot in the south, Guanting Linhai, a national 4A scenic spot and the only national ecological park in the province, a national Forest Park, "the First Mountain in Luyang", and a national 4A scenic spot -- Zipeng Mountain. County sent close to China's largest base of flowers and seedlings - three posts, four seasons of flowers and trees verdant, send river, Tan Chong River and other four water roundabout, is a modern waterfront garden city; He 'an high-speed Railway, He Jiu Railway, Ningxi Railway and Hewu Railway, He Ning Railway, Hejie Railway, Heye Railway and Jiqi high-speed pass through the border; In May 2022, it was selected as one of China's Top 100 Counties with Investment Potential in 2021, ranking No. 55 in China. In July, it was selected as one of China's Top 100 Counties in 2022, ranking No. 59 in China.

In 2021, the GDP of Fexi County reached 101.87 billion yuan, with a year-on-year growth of 13.7%, making it the first county in Anhui with "100 billion yuan".