PROBLEM TO BE SOLVED: To provide a simple chair type massage machine with a short width in the right and left direction which is not obstructed by an entrance with a narrow width of a house, etc. and a door of a room while it has an armrest part where both arms of a person to be treated can be treated.SOLUTION: A chair type massage machine includes: an inner partition part 2 erected outside a seat part on which a person to be treated is seated an outer partition part 3 erected outside the inner partition part 2 a treatment part 4 provided on at least either the outer side face of the inner partition part 2 or the inner side face of the outer partition part 3 and an armrest part 5 provided to the inner partition part 2 and the outer partition part 3 which has a moving part to cause the outer side face of the inner partition part 2 and the inner side face of the outer partition part 3 to be closer to each other or farther from each other while keeping them parallel with each other. The inner partition part 2 and the outer partition part 3 relatively move in parallel, and are freely openable and closable in the right and left direction of the person to be treated.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】 被施療者の両腕を施療することができる肘掛け部を有しながらも、家屋などの横幅の狭い玄関口や部屋の扉口に対してもつかえることがない、左右方向の横幅が短く簡潔な椅子式マッサージ機を提供することを課題とする。【解決手段】 被施療者が着座する座部の外側に立設された内側仕切部2と、内側仕切部2の外側に立設された外側仕切部3と、内側仕切部2の外側面又は外側仕切部3の内側面の少なくともいずれか一方に設けられた施療部4と、内側仕切部2及び外側仕切部3に設けられ、内側仕切部2の外側面と外側仕切部3の内側面を平行に保ちながら近づかせ又は遠ざからせる可動部を備えた肘掛け部5を有し、内側仕切部2と外側仕切部3が、相対的に平行移動して被施療者の左右方向に開閉自在である椅子式マッサージ機などにより解決することができた。【選択図】図1