A kind of sitting and lying posture adjusting device of massager,It includes have pedestal,Mounting,Backrest,Leg support and gearing group; It is the mounting that is pivoted on the what pedestal,And what mounting Hou end is pivotally connected backrest,Front end is then pivotally connected leg support,The gearing system what pedestal is pivoted and can make the swing arm of reciprocally swinging displacement by power source drive,Another what mounting,Backrest and leg support are pivoted with connecting rod respectively,And each connecting rod is interlocked with swing arm,Again with each connecting rod drive respectively the mounting,Backrest and leg support make reciprocal rotation displacement,Be adjusted transformation mounting,Backrest and leg support use angle; Thereby,Reciprocally swinging displacement is made in swing arm using single power source driving gearing group,And with each connecting rod drive mounting,Backrest,Leg support makees reciprocally swinging displacement,Can be adjusted transformation mounting,Backrest and leg support use angle,And reaches easy what control adjustment and reduce the Practical Benefit of production assembling cost.一種按摩機之坐臥姿勢調整裝置,其包含有基座、座架、背架、腿架及連動組;其係於該基座上樞設座架,且於座架後端樞接背架,前端則樞接腿架,該連動組係於基座樞設可由動力源驅動作往復擺動位移之擺臂,另於座架、背架及腿架分別樞設有連桿,且以擺臂連動各連桿,再以各連桿分別帶動該座架、背架及腿架作往復擺轉位移,以進行調整變換座架、背架及腿架之使用角度;藉此,利用單一動力源驅動連動組之擺臂作往復擺動位移,而以各連桿帶動座架、背架、腿架作往復擺動位移,即可調整變換座架、背架及腿架之使用角度,而達到易於控制調整及降低製作組裝成本之實用效益。