In this paper, two theories of wind turbine blade design methods of classica blade element momentum theory and the corrected blade element momentum are compared, the parameters of the corrected blade element momentum theory are fitted ，In an example of a type of wind turbine,using matlab programming function,the specialized software xfoil of wind wing was used.The results show that the differences of chord length and twist angle before and after are mainly near the root of leaf; the main difference of the axial induction factor between classical blade element momentum theory and corrected blade element momentum theory is that the blade root and the tip portion, the effect of the tangential induction factor is very small.