Abstract: For the purpose of resolving the reradiation interference of a wind turbine, accurate and quick calculation of the scattered electric field of a wind turbine blade is a fundamental requirement. In order to solve the distributed electric field of electricity large size of wind turbine using the conventional method of moments, enormous computational resources are needed, which makes the problem difficult to solve. In this study, we improve the surface element dissection method of the conventional method of moments to solve the reradiation interference of wind turbine. We also introduce the basis function of the method of moments based on the surface triangular surface element, and use the periodic symmetry of the blade to simplify the impedance matrix filling procedure. The method is used to determine the scattered electric field induced by the surface induction current of a wind turbine. It is possible to quickly calculate the reradiation interference of wind turbine. In order to confirm the accuracy and efficiency of the method proposed in this paper, experiments were carried out based on the wind turbine scaling model of anechoic chamber. The findings reveal that the results calculated using the method in this paper are in good agreement with the experimental measurements. When the reradiation interference level of a wind turbine blade is computed using the suggested method and the conventional method of moments at various azimuth angles, it is demonstrated that the methods accord well. The computing memory of matrix elements in the proposed method is reduced by 34.64 times, and the solving efficiency of matrix elements is increased by 37.95 times. The proposed method can provide theoretical and technical foundations for the further theoretical investigation of the dynamic electromagnetic scattering from massive wind turbine arrays in wide space.