Ding 'an County, directly administered by Hainan Province, is located in the northeast of the central part of Hainan Island, between 110°7 '-110°31' east longitude and 19°13 '-19°44' north latitude, with a total area of 1196.6 square kilometers. Ding 'an County has a tropical monsoon Marine climate, with mild climate, abundant heat, abundant sunshine and abundant rainfall. As of 2018, Ding 'an County has jurisdiction over 10 towns, with the county government located in the towns. According to the seventh census, as of midnight on November 1, 2020, the permanent population of Ding 'an County was 284,690.

From Yuan to Yuan 29 years (1292) June, the establishment of Ding 'an County; In 1988, Hainan was established as a province under the Hainan Provincial People's Government. Hainan East Ring highway from Dingcheng through the east, Haiyu road through the entire territory. Ding 'an County is the birthplace of Qiongju and the hometown of Chinese folk culture (Qiongju) art. There are Nanli Lake scenic spots, Wenbi Peak Taoist culture tourism area, Hainan tropical bird World, Dingyang Ancient City (Dingcheng), Jiancheng Tower, Taishi Fang, Bajiao Hall, Zhang Yuesong's former residence, Murui Mountain Revolutionary base Memorial Park and other natural and cultural attractions.

In 2021, the GDP of Ding 'an County reached 11.764 billion yuan, with a year-on-year growth of 8.0%. The added value of the primary industry was 4.14 billion yuan, up by 4.1% year on year; The added value of the secondary industry was 1.83 billion yuan, up 13.3% year on year; The added value of the tertiary industry was 5.794 billion yuan, up 9.2% year on year. The ratio of three industrial structures is 35.2:15.6:49.2.