Nancheng County, subordinate to Fuzhou City of Jiangxi Province, is located in the east of Jiangxi Province, in the middle of Fuzhou City, located in the lower reaches of the Xujiang River, adjacent to Zixi County and Lichuan County in the east, Nanfeng County in the south, Yihuang County in the west and Linchuan District and Jinxi County in the north. The county covers an area of 1,698 square kilometers, with jurisdiction over 10 towns and 2 townships. By the end of 2020, the permanent population of Nancheng County is 286,200.

Nancheng County for the Jiangyou cultural area, known as "Gan place house, Fuxian County Wang County" said. The county was built in the fifth year of Emperor Gaozu of Han Dynasty (202 BC). It was called Nancheng because it was located in the south of Yuzhang County, and it gave birth to such influential regional cultures as Maju Longevity culture, Hongmen Yiwang Culture and Jianchangbang Traditional Chinese Medicine culture. The Chang-Fu Railway, Fu-Yin Expressway, Ji-guang Expressway, 206 National Road, 316 National Road and Chang-Xiamen Highway intersect.

In 2021, the GDP of Nancheng County reached 17.513 billion yuan, with a comparable increase of 7.8%; The total fiscal revenue reached 1.989 billion yuan, up 13.2% year on year.
Nancheng County is the national food industry strong county, grain high-yield creation county, healthy fishery farming demonstration county, e-commerce into the countryside comprehensive demonstration county, agricultural product quality safety county, the province's fruit industry "Top ten county", "aquatic products" "top ten county", the first "ton of grain field county", in 2018 and 2019 consecutively ranked the province's high-quality development advanced county