Small animal subcutaneous lump extraction holder

The utility model discloses a small animal subcutaneous lump extraction holder. The injector comprises an injector barrel, a piston body, a piston rod, a rear seat and a needle head, wherein the syringe needle is fixedly mounted at the front end of the syringe barrel; the piston body is sleeved in the syringe barrel body in a matching manner; the piston rod is fixed at the rear end of the piston body; backseat located at rear end of piston rod, the axis positions of the piston body and the piston rod are of an integrated hollow structure. As a center hole, the rear end of the center hole is sealed by a rear seat, a core rod is sleeved in the needle tube and the center hole, the core rod comprises a small-diameter section and a large-diameter section, the small-diameter section is sleeved in the needle tube in a matched manner, the large-diameter section is sleeved in the center hole in a matched manner, and a stop component for limiting excessive backward movement of the core rod is arranged in the middle of