Abstract: The static aeroelastic analysis method is applied in the load design in this paper, and an elastic load correction method based on the external rigid aerodynamic force and the modified strip method is developed. The deformation of the structure is calculated by the engineering beam method, the stiffness matrix of different components is obtained, and the aerodynamic force is obtained from the external test or the CFD aerodynamic database interpolation by meshing the model. The data transfer for the displacement and the force between the structure and the aerodynamics field is performed by using the surface spline function method and the shape function area coordinate weighting method, respectively, the elastic load is computed from the deflection of the aerodynamic mesh, that is, the improved strip. On this basis, the computation is iteratively looped until the displacement of the structural model converges. At the same time, the feasibility and the efficiency of the method are verified by analyzing some engineering examples and comparing with the well matured methods.