There is provided a massage device capable of producing innovative and comfortable massage effect by massaging a target body part over a wide area in its lengthwise direction with substantially rectilinear motion of a pressure-applying point. The massage device 1 comprises a pair of treatment members 23, 24 arranged face-to-face with each other at a spacing large enough for insertion of part of human body; a holding mechanism 162 for holding and pressing the body part in sandwich style by moving at least one of the paired treatment members or both of them 23, 24 in the direction of width of the body part set in place between the paired treatment members; and a moving mechanism 26 for moving the treatment member 23, 24 in the direction of length of the body part while maintaining the holding condition of the treatment member 23, 24 effected by the holding mechanism 162.