Chengmai County, directly governed county of Hainan Province, is located in the northwest of Hainan Island, is an important part of the urban agglomeration around the Beibu Gulf, between latitude 19 ° 23 ′ - 20 ° 01 ′, longitude 109 ° 45 ′ - 110 ° 15 ′, the county's total land area of 2,072.97 square kilometers, the area of the sea area 470.53 square kilometers. Chengmai County has a tropical monsoon climate with abundant light, high temperature and rain, many thunderstorms, frequent typhoons, four seasons are not obvious, and the dry and rainy seasons are distinct, with rain and heat at the same time. As of August 2022, Chengmai County has 11 towns and Jin'an Preparatory Group under its jurisdiction, 3 state farms and 1 provincial forest farm. The county people's government is located in Jinjiang Town. As of the end of 2022, Chengmai County had a resident population of 504,500.
Chengmai County was formerly known as Gouzhong County, since the Western Han Dynasty Yuanfeng yuan year (110 BC) set up the county, in April 1988 directly under the Hainan Province. Within the territory of Hainan area ring road highway, the middle line highway, Haikou City around the city highway, Guangdong railroad, Hainan West Ring Railway and other highways and railroad lines through, with the village port. Chengmai County has Hainan Yongqing Cultural Tourism Scenic Spot, Fushan coffee culture and style town center area and other scenic spots. Chengmai County has been awarded the titles of China's Beautiful Countryside Construction Demonstration County, National Experimental Area of Sustainable Development, National Demonstration Area of Public Cultural Service System, National Sanitary County City, and National Basic Balanced County of Compulsory Education Development.
In 2022, Chengmai County realized a GDP of 44.464 billion yuan (excluding the bonded area), with a year-on-year growth of 2.1% at constant prices, which is 1.9 percentage points higher than that of the province.