[Problem] To provide a massage device capable of smoothly operating from when someone sits to when a massage starts, without imparting an uncomfortable feeling when the person sits even though a mechanical massage mechanism is incorporated into the seat section. [Solution] A massage device (1) having a seat section (2), a seatback (3) capable of reclining and provided on the rear section of the seat section (2), and a massage mechanism (8) for massaging the buttocks or the thighs of a user, and provided in the seat section (2). The massage mechanism (8) is configured so as to rise relative to the seat section (2) in coordination with the rearward reclining of the seatback (3).