The invention provides a method for eliminating passive jamming of an electric transmission line to a short wave direction-finding station. The method includes the following steps that whether the influence for establishing the electric transmission line on the direction-finding precision of the direction-finding station exceeds a national standard or not is judged, and if yes, the next step is executed; a spatial spectrum estimation direction-finding system is used for testing the direction of wireless incoming waves received by the direction-finding station; whether the direction-finding precision of the spatial spectrum estimation direction-finding system meets the national standard requirement or not is judged. According to the method, the spatial spectrum estimation direction-finding system can be established on the direction-finding station, the discernibility of the direction-finding station to invalid signals is improved, the direction-finding precision is improved, and the passive jamming problem caused by the electric transmission line is solved.