A kind of knob type fitness massager,It include an ontology,The ontology is equipped with a column,The column is equipped with control panel and handrail,Be equipped in the ontology get rid of rouge transmission mechanism,Sway one's hips transmission mechanism and wiring board,Wherein,The transmission mechanism that sways one's hips includes the motor that sways one's hips being mounted in the ontology,Its motor output power is rotated through reduction gear box driving eccentric wheel,Ball head connecting rod is equipped with above the eccentric wheel,The bulb at the ball head connecting rod both ends in conjunction with ball seat activity,Two ball seats are connect with the pedal of eccentric wheel and oscillating plate component respectively,The pedal is rotatablely installed with respect to connecting plate,And rotating mechanism is equipped between connecting plate and pedal,Thereby,User can separately or concurrently reach get rid of rouge,The practical purpose person for the function that sways one's hips.一種旋扭式甩脂機，包括有一本體，該本體上設有一立柱，該立柱上設有控制面板及扶手，該本體內設有甩脂傳動機構、扭腰傳動機構及線路板，其中，該扭腰傳動機構包括有安裝在該本體內之扭腰電機，其電機輸出動力經減速齒輪箱驅動偏心輪轉動，該偏心輪上方設有球頭連桿，該球頭連桿兩端之球頭與球座活動結合，該兩個球座分別與偏心輪及振動板組件的踏板連接，該踏板相對連接板轉動安裝，並在連接板與踏板之間設有轉動機構，藉此，使用者可分別或同時達到甩脂、扭腰功能之實用目的者。
