A radio tomography imaging method according to the present invention includes: calculating a conversion function based on a transmission image picked up by using a radiation emitted from a first radiation source and a transmission image picked up by using a radiation emitted from a second radiation source; wherein a position of the second radiation source when the radiation has been emitted coincides with a position of the first radiation source when the radiation has been emitted, and one of the first and second radiation sources emits the radiation when the other emits the radiation, picking up a plurality of first reconfiguration transmission images and a plurality of second reconfiguration transmission images by using a plurality of first reconfiguration radiations and a plurality of second reconfiguration radiations simultaneously emitted from the first radiation source and the second radiation source; correcting the plurality of first reconfiguration transmission images and the plurality of second reconfiguration transmission images into a plurality of corrected transmission images based on the conversion function; and reconfiguring the plurality of corrected transmission images into three-dimensional data.