A massage apparatus includes an upright support frame and a moving seat. Each of the support frame and the moving seat has a U-shaped cross-section. The support frame has a middle main wall formed with an elongated groove, and two side walls extending rearwardly away from the main wall. The moving seat is connected slidably to guide rails disposed on the support frame, and has a middle plate that faces closely toward a rear surface of the main wall of the support frame, and two side plates that extend rearwardly similar to the side walls of the support frame. A massage unit includes a massage motor connected to the moving seat, a rotating shaft projecting forwardly through the elongated groove, and a head portion connected to the rotating shaft.
