[Problem] To provide an electric stimulation device that is superior in operability, safety, space conservation, and reduced cost. [Solution] The present invention is provided with: output circuits (6b1-6bn) that supply an electric stimulation output to a plurality of sets of electrodes (71a, 71b to 7na, 7nb) and electrode mounting detection circuits (6c1-6cn) that detect that each electrode is mounted to a human body. One output adjuster (3) is provided that adjusts output by means of a manual operation, and the output adjuster (3) is configured in a manner so as to be able to simultaneously adjust or individually adjust the output to the plurality of sets of electrodes by means of the mounting to a human body being recognized before starting output.
