Jiangyin City, known as Cheng for short and Jiyang in ancient times, is a county-level city under the jurisdiction of Jiangsu Province, managed by Wuxi City. It is located in the north of Wuxi City, between 31 ° 40 ′ 34 ″ N and 31 ° 57 ′ 36 ″ E, and between 119 ° 59 ′ E and 120 ° 34 ′ 30 ″ E. It has a subtropical monsoon climate. It is located at the end of the Yangtze River and the throat of the Yangtze River. It has been a river defense fortress in the past dynasties. It is an important transportation hub in the north and south of the Yangtze River and a natural good port city for river-sea transport, with a total area of 987.5 square kilometers. By the end of 2021, Jiangyin City has a total registered residence population of 1.2696 million and a permanent population of 1.782 million.

Jiangyin was originally located in Yanling, the land of Wu, and Jiyang County was established in the Jin Dynasty. It was named after its location in the "Yin of the Great River"; In 1983, Jiangyin County was changed to Wuxi City; In 1987, the county was withdrawn and the city was established; In 2017, Jiangyin became the only pilot city in Jiangsu Province for the integrated reform at the county level of "city and county with the same authority". By 2019, Jiangyin City had jurisdiction over 6 streets and 10 towns; It also has jurisdiction over 4 township units and the municipal government is located in Chengjiang Street. In 2017, Jiangyin won the title of "National Civilized City". In 2018, Jiangyin won the title of "National Sanitary City".

In 2021, Jiangyin will achieve a GDP of 458.033 billion yuan, an increase of 8.1%; The per capita GDP reached 257200 yuan; The added value of the primary industry was 3.83 billion yuan, up 2.0%; The added value of the secondary industry was 238.333 billion yuan, up 8.5%; The added value of the tertiary industry was 215.870 billion yuan, up 7.7%; The proportion of the three industries was adjusted to 0.8:52.0:47.2.