The variable pitch wind turbine system is a higher-order, nonlinear, strong coupling, multivariable and time-variable system. The control system is an integrated control system. Above the rated wind speed, we use fuzzy control strategy about power feedback Through controlling the pitch angle,we can change the attack angle of the blades in order to absorb a steady wind energy, and achieve constant power output. The simulation results show that fuzzy control method is easy to obtain better performance such as anti-disturbance and rapidness.