Based on the wind turbine tower-blade coupled model, the modified blade element momentum was used to simulate the aerodynamic loads of wind turbine model, which considers the rotational effect caused by blades and blade-tower interaction. The wind turbine tower-blade coupled model considering the centrifugal force from rotational blades was established in finite element method, and the time-domain analysis of wind-induced responses of wind turbine tower-blade coupled model was carried out. Then, the dynamic response characteristics of the wind turbine system under stochastic wind loads were discussed on the basis of the calculated results and through the contrast with the wind-induced responses of a tower without the blades. It is proposed that the wind turbine tower-blade coupled model should be adopted in wind resisting design.