Disclosed is a massage device (1). The device (1) comprises a therapeutic member (25) that moves with respect to the back of a person a drive source (26) that makes the therapeutic member (25) to move a power transmitting mechanism (23, 24) that connects the drive source (26) and the therapeutic member (25) a displacement amount detection section (30) that detects the displacement amount of the power transmission mechanism (23, 24) and a control unit (50) that calculates the moving time needed by the therapeutic member (25) from a first position (P1) to a second position (P2), or calculates the moving speed of the therapeutic member (25) based on the displacement amount, and then changes the output of the drive source (26) according to the moving time or the moving speed.
