Offshore energy island device

The invention relates to an offshore energy island device. The offshore energy island device comprises a steel base, steel-concrete supporting pieces and an energy island platform. The steel-concrete supporting piece is arranged in the vertical direction, the steel-concrete supporting piece comprises a steel pipe pile and a reinforced concrete pile, the bottom of the steel pipe pile is connected to the top of the reinforced concrete pile, the top of the steel pipe pile is connected with the energy island platform, and the bottom of the reinforced concrete pile is connected with the steel base. The offshore energy island device is formed by combining the steel structure and the concrete structure, the problem that the cost is too high due to the fact that a single steel structure is adopted can be solved, meanwhile, the structural strength problem caused by the fact that a single concrete structure is adopted can also be solved, and due to the fact that the steel base, the steel-concrete supporting pieces and