A electrical treatment device (100) includes a band-like member (20), a first electrode portion (41), a second electrode portion (42), a first mark portion (31) configured to be aligned with a specific position of a right lower limb when the band-like member (20) is wrapped around the right lower limb such that the first electrode portion (41) is guided to a first target position and the second electrode portion (42) is guided to a second target position, and a second mark portion (32) configured to be aligned with a specific position of a left lower limb when the band-like member (20) is wrapped around the left lower limb such that the first electrode portion (41) is guided to a third target position and the second electrode portion (42) is guided to a fourth target position.
