One kind having the massager of symmetrical machine core,System includes: the first,Two case components are equipped with a connecting band towards outside connection respectively,The first,Between two case components respectively with first,Two movable sleeves are mutually pivotally connected and adjustable turnover certain degree,The first,Set in two case components power source transmission first,Two transmission groups,And connection transmission outward first,Two massage groups pinpoint kneading,With toward first,Two movable sleeve directions fixed point transmission first,Two guide tooth slot screw rods,The first,Two movable sleeves with one first,The embedding what first of two serrations,In the guide tooth slot of two guide tooth slot screw rods,Make first,Two guide tooth slot screw rods be able to pull when rotating this first,Kneading is moved close to or far from direction in two case components synchronization left and right,Stop acting waiting another side and also resetting another and act if first resetting on one side making its synchronization.一種具有對稱機芯之按摩器，係包含有：第一、二機殼組件分別朝外側連結設有一連接帶，第一、二機殼組件間分別以第一、二活動套相互樞接而可調整轉折特定夾角，第一、二機殼組件內設動力源傳動第一、二傳動組，及往外連接傳動第一、二按摩組定點揉捏，與往第一、二活動套方向定點傳動第一、二導齒槽螺桿，第一、二活動套以一第一、二齒形鍵嵌於第一、二導齒槽螺桿之導齒槽內，使第一、二導齒槽螺桿轉動時得以拉動該第一、二機殼組件同步左右之靠近或遠離方向移動揉捏，若一邊先復位則停止動作等待另一邊也復位再一起動作使其同步。
