Provided is a treatment assistance device for facial care, with which dependence on the technique of a practitioner can be reduced. A treatment assistance device 200 is suited for facial care and includes a first terminal 201 and a second terminal 202. A first conducting member 211 to be stepped on by the practitioner is connected to the first terminal 201, and a second conducting member 212 to be brought into contact with a person to be treated is connected to the second terminal 202. The first conducting member 211 is, for example, one or a unitary conductive plate, and the second conducting member 212 is, for example, a set of sheets. Although the order is not limited to the following, the practitioner places the first conducting member 211 near the location on a treatment table 220 such as a bed where a treatment is to be performed, steps on the first conducting member with one or both feet, disposes the second conducting member 212 on the treatment table 220 so as to be in contact with the person to be treated, and performs adjustments using an intensity adjustment 203A of the treatment assistance device 200.