The pile sinking construction of steel pipe pile for jacket foundation of offshore wind turbine generator system is usually assisted by a special pile-driven platform. Combined with the operation process requirements, marine environmental conditions, and related specifications, the structure design of pile-driven platform of steel pipe pile is conducted. The overall structure strength of pile-driven platform and the local structure strength of lifting lug are calculated and analyzed respectively with SESAM software and ANSYS Workbench software, and the calculation results are evaluated according to the specifications. The results show that the overall structure strength of pile-driven platform and the local structure strength of lifting lug meet the specification requirements. The calculation analysis method can also be appropriate for the strength evaluation of jacket foundation of offshore booster station, pile-driven platform of offshore single pile foundation, or other similar jacket structures.