Wenchang, alias Zibei, is a municipality under the jurisdiction of Hainan Province, located in the northeast of Hainan Province, with the south corner of Puqian Town (Mulan Head) as the northernmost point, and it is a famous cape protruding from Qiongzhou Strait; The easternmost point is qi zhou Islands, which is an archipelago in the sea east of Wengtian Town. The southernmost point is Qunxian Village, Zhongxing Town; The westernmost corner is Dongtou Village, Penglai Town. The east and southeast are bordered by the South China Sea, the north is bordered by Qiongzhou Strait, and the west and southwest are bordered by Haikou, Ding 'an and qionghai city (counties) in turn, with a total land area of 2,488 square kilometers, a sea area of 5,245 square kilometers and a coastline of 289.82 kilometers. By 2022, it will administer 17 towns and 2 farms.

From BC 1 10, that is, the year of Emperor Wu of Han Dynasty, it has a history of more than 2 100 years. In 627, it was changed to Wenchang County; 1995, change county into city and Wenchang city.