Lai'an County, belonging to Chuzhou City, Anhui Province, is located in the hinterland of the Yangtze River Delta, in the eastern part of Anhui Province, neighboring Tianchang City and Luhe District of Nanjing City, Jiangsu Province, in the east, Langya District and Mingguang City in the west, Pukou District of Nanjing City, Jiangsu Province, in the south and Xuyi County of Huai'an City, Jiangsu Province, in the north, with a total area of 1,481 square kilometers, between the longitude of 118°20′ to 118°40′ East, and latitude of 32°10′ to 32°45′ North. square kilometers. As of the end of 2022, the resident population of Lai'an County was 424,000 people. Stone tools, ceramics and bone tools found at the Dunqushan site in Lai'an County prove that human beings have inhabited the county since the Neolithic Age. According to "Taiping Huan Yu Ji": "Lai'an Water is three miles east of the county, originating from Maling Mountain and flowing east to the village of Lai'an". In the first year of Zhongxing of the Southern Tang Dynasty (958), Yongyang County was changed to Lai'an County, belonging to Chuzhou of the Huainan Army.In January 1993, Chu County was abolished, and Chuzhou City was set up under the jurisdiction of the province, and Lai'an County was subordinate to Chuzhou City. As of the end of 2020, Lai'an County has 11 towns and 1 township, and the county people's government is located in Liming Road, Xin'an Township.In January 2020, Lai'an County was awarded the honorary title of "China's Beautiful Countryside Construction Demonstration County". In 2022, the GDP of Lai'an County will be RMB 39.22 billion, with a year-on-year growth of 6.6% at comparable prices.