PROBLEM TO BE SOLVED: To apply an effective rotatory operation to the pelvis, which is the trunk of the body.SOLUTION: A chair-type massage machine with a backrest section 1 and a seat section 2 includes trunk rotating mechanisms 5a and 5b for rotating the trunk of a user, at the backrest section 1 and the seat section 2 respectively, wherein the backrest section has therapeutic elements 21 pressing and treating the back of the human body, and both the trunk rotating mechanisms 5a and 5b which substantially simultaneously operate in the same direction to apply the rotatory operation to the trunk of the body apply the rotatory operation to the trunk of the body during the operation of the therapeutic elements 21.COPYRIGHT: (C)2011,JPO&INPIT【課題】体幹部である骨盤に効果的な回旋動作を与えることができるものとする。【解決手段】背もたれ部1及び座部2を備えた椅子型のマッサージ機において、背もたれ部1及び座部2の夫々に使用者の体幹部を回旋させるための体幹部回旋機構5a,5bを備えるとともに、背もたれ部に人体背部を押圧して施療する施療子21を備え、略同時に同方向に動作して体幹部に回旋動作を与える上記両体幹部回旋機構5a,5bは、上記施療子21の動作中に体幹部に回旋動作を与えるものである。【選択図】 図1