The present invention relates to a syringe having an insertion portion opened to insert a syringe on one side thereof and a cutting surface corresponding to an outer circumferential surface of the syringe in the other side and a knob fixed to a handle of the cylinder end portion of the syringe along the cutting surface, A cylinder fixing portion including a slit for fixing the cylinder slit； A second crossbar to which one end is coupled to a lower portion of the cylinder fixing portion, a second crossbar to which the first crossbar and the second crossbar are inserted, and a pushing fixing groove for receiving a pusher end portion of the syringe, A transverse fastening portion to which the other end of the first cross bar and the other end of the second cross bar are coupled through the fastener fixing portion, and an elastic hook provided on the fastening slit formed on the upper portion of the fastener, Wherein the elastic retaining piece has a through hole through which the first cross bar passes, and the upper part is engaged with the elastic retaining piece And the lower portion includes a coil spring fixed to the coupling slit, wherein the first crossbar is detachable from the cylinder fixing portion and the horizontal overlap portion, For has characterized the syringe holder are formed with a plurality of engaging shoulder portion fixed intervals across the elastic piece hooks. Therefore, according to the present invention, since the stoppers are formed at the first crossbar at regular intervals, and the movement of the stopper can be restricted by engaging the elastic catches with the stoppers, The advantage is that you can inject the correct amount of drug. In addition, since the spacing of the latching jaws is formed in correspondence with the capacity of the drug, the present invention has the advantage that it can be universally used irrespective of the capacity of the drug to be injected by replacing the first crossbar having the spacing of the latching
