Provided is a massage machine (1) including a treatment member (83); an arm (84) that supports the treatment member; a drive shaft (92) that supports the arm and causes the treatment member to approach and be separated with respect to a treatment target site; a motor (M2) that drives the drive shaft to rotate; an air cell (105, 106) that is able to expand toward the treatment member or/and expands so as to cause the treatment member and the treatment target site to approach each other; an air supply/discharge device (14) that supplies and discharges air with respect to the air cell; a control unit (7) that controls driving of the motor and the air supply/discharge device; and a sensor (16) that directly or indirectly detects a load applied from the treatment target site to the treatment member, wherein when the sensor detects that the load increases or decreases to a predetermined value, the control unit causes the air supply/discharge device to discharge or supply air.