In order to accurately evaluate the influencing factors of the structural safety of the self-elevating offshore wind turbine installation platform, the load in the standing operating state and towing state is studied in this paper, which includes self-gravity load, wind load, current load, wave load, wave-induced inertia force, dynamic amplification load and operating load. This paper focuses on two working states of the platform. In the standing state, the effect of environmental load, as well as the dynamic amplification load is considered under both normal operating condition and storm condition. In the towing state, mainly the wave environmental load is taking into consideration. According to the data calculated above, the strength calculation is carried out. The results show that the design strength of the platform meets the requirements. This calculation method can provide a basis for the design of the self-elevating platform.