According to the different of depths and geological conditions,and with the combining of the completed offshore wind farm base forms and construction methods, several forms of gravity, single pile, group piles, set of caisson, open caisson and suction barrel base were introduced. To the different foundation forms,the self-elevating platform, the semi-submersible barge shallow draft, piling barge, lifting the overall floating and other appropriate foundation construction methods were proposed,respectively. According to the types of fan unit,the tower tube and installation of the fans were also introduced.