Abstract: Combined with a coastal 300 MW offshore wind farm project, the steel structure of offshore wind power booster station platform is designed, and the three-dimensional finite element simulation of offshore wind power booster station platform is carried out with ANSYS finite element software, and the stress distribution under different load combinations is analyzed. The results show that the designed steel structure of offshore wind power booster station platform meets the requirements, and the calculation results have practical significance for the structural design and application of offshore wind power booster station platform.