Since the existing pitch control strategy is not effective around the rated wind speed，an improved one with prediction-correction function is proposed in this paper.In this improved strategy，a moving average method is used to process the wind speed，and then the predicted values of pitch angle are obtained using the curve-fitting method.On this basis，the control error is corrected by a PI controller.The performance of the existing and the proposed pitch control strategies are compared by simulations.The simulation results show that the improved strategy can reduce the fluctuations of random wind effectively，enable the wind turbine capture more wind energy under the rated wind speed，and improve the wind turbine performance above the rated wind speed by reducing pitch frequency.The field test results also verify the improved strategy.