To provide a motor-driven massage machine by which the operation of a massage mechanism is easily executed.

Armrests 2 are arranged at the both sides of a seat 1 where the motor-driven massage mechanism is incorporated and the armrests 14 covered by a jacket material 3 made of a soft material on the outer surfaces are attached to the armrests 2. An operation switch 8 is arranged at the lower side of the jacket material 3 of the armrest 4 and also electrically connected to the control part of a motor-driven mechanism. The jacket 3 of the armrest 4 of the armrest 2 is depressed by finger while sitting on the seat 1, the operation switch 8 is operated and, then, the massage mechanism is operated.