An electrical impedance measuring apparatus includes: a plurality of electrodes adhered to a periphery of a chest a potential measurer configured to perform a process of applying a current to any ones of the electrodes, and measuring potentials by means of other electrodes an impedance acquirer, based on the applied current and the potentials measured by the potential measurer, configured to obtain an impedance of each of meshes, a chest section divided into the meshes a histogram producer configured to set, in the chest section, at least one ROI including from a ventral side to a dorsal side, and configured to obtain a histogram of an impedance distribution in the ROI and a producer configured to produce a color impedance distribution map in which amplitudes of the histogram are replaced with corresponding colors.
