Abstract: To solve the problem of DC bus voltage fluctuation caused by unknown disturbance in wind power system,an active disturbance rejection control with correction function（LADRC-CF） is proposed in this paper. This technique introduces the idea of series correction in the disturbance observation channel of the linear extended state observer（LESO）, and uses the correction function to correct the observation deviation of the LESO for the sum disturbance to achieve better disturbance compensation, and then reach a good control of the DC bus voltage. In addition, the stability and perturbation tracking capability of LADRC-CF are analyzed theoretically. The stability is proved while the rectification method of some parameters is given. Finally, the control performance of the LADRC-CF strategy is tested on a hardware-in-the-loop simulation platform to verify the effectiveness and superiority of the strategy.