Ma 'anshan City, referred to as "Ma", is a prefecture-level city under the jurisdiction of Anhui Province and a city in the center of the Yangtze River Delta, located in East China, the lower reaches of the Yangtze River in the east of Anhui Province, adjacent to Nanjing City of Jiangsu Province in the east, Wuhu City in the west, Hefei City and Chuzhou City in the north, and Xuancheng City in the south, with a total area of 4049 square kilometers. Ma 'anshan is a subtropical humid monsoon climate, monsoon obvious, four distinct seasons, the climate is warm and humid. By 2021, Ma 'anshan has jurisdiction over 3 districts and 3 counties. By the end of 2021, Ma 'anshan has a permanent population of 2.157 million.

In the Western Zhou Dynasty, Ma 'anshan belonged to the State of Wu, and in the Spring and Autumn Period and the Warring States Period, it belonged to the State of Yue and the State of Chu. From Qin to the Western Jin, it belonged to Danyang County (now Danyang Town, Dangtu County). On October 12, 1956, The State Council approved the establishment of Maanshan City, a city under the jurisdiction of the provincial government. Located in Nanjing and Hefei metropolitan areas, Ma 'anshan has 2 national development parks, 1 national comprehensive bonded zone and 6 provincial development parks. Ma 'anshan Port is one of the top ten ports on the Yangtze River, and Zhengpu Port is the only deep-water port of 10,000 tons in the north of Anhui Province, positioning itself as the hub center of Anhui Jiang-sea combined transport. Ma 'anshan is a demonstration area of international tourism and culture in southern Anhui Province. It has such scenic spots as Caishi Ji, Baochan Mountain and Wujiang River.

In 2021, Maanshan's GDP reached 243.933 billion yuan, an increase of 9.1% over the previous year based on comparable prices. The added value of the primary industry was 10.423 billion yuan, up by 6.7%; The added value of the secondary industry was 120.626 billion yuan, up by 10.1%; The added value of the tertiary industry was 112.884 billion yuan, up by 8.3%.