[Objective] To provide a seat type massage machine chair that does not impair the feeling of comfort as a chair even when a seat type massage machine is placed.A chair provided with a seat portion, a backrest member, and an armrest member comprises a second backrest member 13 swinging with its lower end as a fulcrum and stretching an elastic material in front of the backrest member And a gap means for providing a gap for installing the seat type massage machine 1 is provided between the backrest member and the second backrest member. Further, in a chair having a seat portion, a backrest member and an armrest member, the backrest member is pivotably provided about the lower end thereof as a fulcrum, and a second backrest having an elastic material stretched in front of the backrest member A gap means is provided between the backrest member and the second backrest member to provide a gap for placing the sheet type massage machine.BACKGROUND OF THE INVENTION【目的】シート型マッサージ機を載置した状態でも、椅子としての掛け心地が損なわれない、シート型マッサージ機用椅子を提供する。【構成】座部10と背凭れ部材11とひじ掛け部材を備えた椅子において、背凭れ部材の前方に、その下端を支点に揺動すると共に弾性材を張設した第二背凭れ部材13を備え、背凭れ部材と第二背凭れ部材との間にシート型マッサージ機1を設置するための隙間を設ける間隙手段を設けた。また、座部と背凭れ部材とひじ掛け部材を備えた椅子において、背凭れ部材を、その下端を支点として揺動自在に設け、背凭れ部材の前方に、弾性材を張設した第二背凭れ部材を備え、背凭れ部材と第二背凭れ部材との間にシート型マッサージ機を載置するための隙間を設ける間隙手段を設けた。【選択図】図1