Haikou was founded on February 9, 1926, and was liberated on April 23, 1950. 1988 April 13, Hainan established a provincial special economic zone, and Haikou became the capital of Hainan province.

Haikou lies between north latitude 19 3 1'~ 20 04' and east longitude11007' ~11042'. Located in the north of Hainan Island, it is adjacent to Wenchang in the east, Chengmai in the west and Chengmai in the south. It has a history of thousands of years since the opening of the Northern Song Dynasty.

Geographical features and administrative divisions:

Haikou City has a slightly long heart-shaped terrain with gentle terrain. Nandu River, the longest river in Hainan Island, runs through the middle. It is high in the northwest and southeast, low along Nandu River in the middle, and mostly coastal plains in the north. Haikou City is located in the northern edge of the tropical zone with low latitude and belongs to the tropical monsoon climate. There is no cold in winter, no heat in summer, evergreen all the year round, warm and comfortable.

Haikou consists of Hainan Island, Haidian Island and Xinbu Island, with a total area of 3 126.83 square kilometers. 20 19? In, the resident population of Haikou City was 2,327,900. Haikou has jurisdiction over Xiuying, Longhua, Qiongshan and Meilan (county level); There are 2 streets1,22 towns, 2 communities11and 248 administrative villages.