Variable step climbing search method is proven to be Conciseness, and high tracking efficiency, but during search phase, there are disadvantages of tracking errors in case of rapid changes in wind speed. Optimum tip speed ratio method can quickly track on and has strong robustness when wind speed changes rapidity, but Winds difficult to measure, and the measurement has error。Address the above issue, the maximum power point tracking control method is presented based on mode switching which combined optimal tip speed ratio method based on LS-SVM wind speed estimate with Variable step climbing search method. The simulation results show the effectiveness and feasibility of this method.