Abstract: In order to study the effects of wind load on different offshore wind turbine platforms,this paper modeled offshore wind turbines based on OC3-Hywind Spar,UMarine Semi-submersible and ITI Energy Barge platforms respectively. The time-frequency motion response characteristics of three typical floating wind turbine platforms under different working conditions are studied combined with the BEM theory,the radiation/diffraction theory and finite element method. The results show that the standard deviation of motion responses under wind load is lower than that of wind wave coupling. The wind load makes the platforms deviate from the equilibrium position significantly. And the surge response of each platform is more sensitive than other responses. For the surge response,the wind load increases the response peaks at the natural frequency of three platforms. For the heave response,the wind load decreases the response peak at the natural frequency of the Spar platform and increases the response peak of the coupling motion of heave and pitch and the natural frequency of the Semi-submersible platform. However,the wind load has little effect on the pitch response of the Barge platform. For the pitch response,the wind load increases the response peak at the natural frequency of the Spar platform and causes the coupling motion of surge and pitch of Semi-submersible platform. However,the wind load has little effect on the pitch response of the Barge platform. The wind load is the key factor for the coupling motion of the platforms. The wave load is the key factor affecting heave and pitch response of Barge platform.