An electrical treatment device (200) includes an input unit (402) that receives an input of body information relating to a body of a user； a load calculation unit (406) that calculates a load on a knee region of the user on the basis of sensor information and the body information, the sensor information being detected by one or more sensors attached to the knee region of the user； a walking performance calculation unit (408) that calculates a walking performance of the user on the basis of at least acceleration information detected by an acceleration sensor, the acceleration sensor being one of the one or more sensors； and a treatment control unit (410) that controls a voltage applied to a plurality of electrodes that come into contact with the knee region of the user to perform treatment on the knee region. The treatment control unit (410) performs treatment on the knee region at an electrical stimulation intensity appropriate for the user on the basis of the load and the walking performance.
