The transparency of coal seam working face is an important assurance for safe and accurate mining of coal mines. Mine geophysical prospecting is an important means for geological exploration of coal seam working faces, among which the mine radio wave tomography is one of the most common and effective methods. However, the undulating feature of the coal seam will greatly interfere the high-precision attenuation electromagnetic wave imaging. Through two-dimensional numerical simulation experiments, we identified that in a horizontal coal seam, the energy of penetrated radio wave showed an approximate linear attenuation law, while in an inclined coal seam, it showed a very different parabolic attenuation trend. To eliminate the influence of coal seam inclination on the accuracy of radio wave tomography, in this paper, we proposed a correction method for imaging undulating coal seams using radio wave tomography. Further, through three-dimensional numerical simulation experiments, we verified the validity and reliability of the correction method. Overall, both theoretical and numerical simulation experiments indicated that the method could basically eliminate the influence of coal seam inclination and improve the imaging accuracy.