Provided is a legless chair type massage machine which, as well as having a compact massage mechanism, autonomously maintains an upright position without toppling backwards when placed on a floor. Thelegless chair type massage machine (1) is provided with a massage mechanism (8) comprising: a rotary drive shaft (20) which conveys rotational drive power to massage members (11,15); a lifting shaft(66) which moves a base mount (9) up and down; a first drive motor (22) which drives the rotary drive shaft (20); and a second drive motor (54) which drives the lifting shaft (66). In the massage mechanism (8), the drive motors (22, 54) are located adjacent to each other in the left-right direction, motor rotary shafts (23, 56) are oriented in the vertical direction, the rotary drive shaft (20) ispositioned to the front of the motor rotary shafts (23, 56), and the lifting shaft (66) is positioned to the rear of the two motor rotary shafts (23, 56). The legless chair type massage machine (1) also has, installed in the rear section of a seat part (2), a topple-prevention mechanism (79), which prevents a backrest member (4) from falling over backwards.