The method of the wind turbine control was expounded, and based on the PI control theory, the PI torque controller was established, and some research was done based on the control method. The torque control strategy was analyzed, and the process of the torque control was researched. Moreover in considering the element such as transmission chain, tower and filter, and etc., the values of the change of PI gain was calculated along with wind speed changing. Compared the load whether the control strategy was exerted, the results show that the PI control method reduces the load of the key components, which meets the requirements of the control strategy design.