A kind of grain massage gun,Include a gun shaped casing,One pedestal,One electric motor,One spin ornament,One sliding rail,One sliding block group,One passive component,One massage head and at least an extension spring； When the electric motor, which drives the spin ornament to stir the sliding block group, to be moved along the Hou end of the sliding rail toward gun shaped casing,The sliding block group can elongate the extension spring,When the spin ornament passes through the position of the sliding block group,The sliding block group can be pulled by the extension spring and be hit on the what passive component,To drive the massage head protruding,When spin ornament rotation turn around Hou stir once again the sliding block group it is mobile toward gun shaped casing Hou end when,The passive component is no longer influenced by shock and retracts the massage head inside,Above-mentioned movement is thereby re-covered,And reaches and constantly stretched out the massage head and retract action； Use reach it is laborsaving,Structure is simple,It is low in cost and other effects.一種筋絡按摩槍，包含有一槍形殼體、一基座、一電動馬達、一旋擺件、一滑軌、一滑塊組、一被動組件、一按摩頭及至少一拉伸彈簧；當該電動馬達帶動該旋擺件撥動該滑塊組沿該滑軌往槍形殼體之後端移動時，該滑塊組會拉長該拉伸彈簧，當該旋擺件通過該滑塊組之位置時，該滑塊組會被該拉伸彈簧所拉動而撞擊於該被動組件上，以帶動該按摩頭向外伸出，待該旋擺件旋轉一圈後再度撥動該滑塊組往槍形殼體後端移動時，該被動組件不再受到撞擊而將該按摩頭往內縮回，藉此重覆上述動作，而達到將該按摩頭進行持續地伸出與縮回動作；藉以達到省力、結構簡單、成本低廉等功效。
