PROBLEM TO BE SOLVED: To provide an electrical impedance measurement device including a configuration by which hyperextension/collapse can be appropriately acquired.SOLUTION: An electrical impedance measurement device comprises: a plurality of electrodes 111-11n stuck on the periphery of the chest of an organism an electric potential measurement unit 20 in which electric current is applied to any of the electrodes so that electric potential is measured by use of the other electrodes impedance acquisition means 34 which meshes a cross section area of the chest to acquire information related to impedance for each mesh on the basis of the applied current and the measured electric potential and average value calculation means 35 which obtains a whole area average value of the impedance for the all meshes in the cross section area of the chest, and obtains a sectional area average value of the impedance for meshes included in each area formed by dividing the all area of the cross section area into a plurality of sections.COPYRIGHT: (C)2015,JPO&INPIT