PURPOSE: To make transportation and conveyance convenient by compactly packing the whole in a massage chair composed of a seat part and a seat back part enclosing a massage mechanism.

CONSTITUTION: A seat back part 2 is installed so as to be freely mountable on and demountable from a seat part 1, and a backward overturning preventive frame 20 is installed in a rear lower part of the seat part 1 so as to be freely mountable and demountable. Thereby, three parts of the seat part 1, the seat back part 2 and the backward overturning preventive frame 20 can be separated from each other, and can be bulkily stacked low.