A kind of composed structure of vibrating body-shaping fat reducing machine, to constitute include a casing, sets the components such as brandreth, lower brandreth, chassis, controller, motor, shaft, eccentric shaft and connecting rod in control panel on the what casing and the position what casing. It is that sets an interconnecting piece on brandreth on this,Lower brandreth is enabled to be connected on the interconnecting piece and be fixed on chassis,And the controller is fixed on chassis side,And be equipped with one in the middle part of the lower brandreth and adjust iron plate,The motor system is fixed on the adjusting iron plate,The adjusting iron plate has adjustable elongated hole； The motor sleeve is equipped with one first belt pulley again,It is arranged on the lower brandreth for the shaft,The shaft is set with eccentric shaft group,The eccentric shaft is equipped with connecting rod,The small end is enabled by connector and is bolted on brandreth,And the second belt pulley is set in shaft,This first,Belt is equipped between second belt pulley. Thereby not only facilitate adjustment belt tension, and shorten the spacing of brandreth up and down, make the height decline of body shaping fat reducing machine percussion mechanism casing, beautification body shaping fat reducing machine saves material； It so that vibration is averaged, reduced friction, promote service life and the quality of motor driven.一種振動塑身甩脂機之組成結構，其構成包括一機殼、設於該機殼上之控制面板，以及位於該機殼內之上鐵架、下鐵架、底架、控制器、馬達、轉軸、偏心軸和連桿等構件。係於該上鐵架上設一連接部，令下鐵架連接在該連接部上且固定在底架上，且該控制器固定在底架一側，而該下鐵架中部設有一調節鐵片，該馬達係固定在該調節鐵片上，該調節鐵片具有可調節的長形孔；又該馬達套設有一第一皮帶輪，該下鐵架上供該轉軸設置，該轉軸與偏心軸組設，該偏心軸上設有連桿，令該連桿上端通過連接件和螺栓連接在上鐵架上，而轉軸上設第二皮帶輪，該第一、第二皮帶輪之間設有皮帶。藉此不僅方便調整皮帶鬆緊，並縮短上下鐵架的間距，使塑身甩脂機震動機構機殼的高度下降，美化塑身甩脂機，節省材料；更能使振動平均、減少磨擦，增進馬達傳動的壽命及品質。
