A massage device for performing a kneading massage including paired left and right massage members, each having a treatment element, and a massage mechanism for operating at least one of the paired massage members to cause the treatment elements to move close to and away from each other in the horizontal direction to produce kneading actions. The massage member has an arm member extending substantially perpendicularly to the approaching/separating direction, and the treatment element is disposed at the front end of the arm member so that an extended line L extending along the protruding direction of the arm member passes through the interior of the treatment element.