Gun type injector for injection of cattle and sheep

The utility model discloses a gun type syringe for cattle and sheep injection, which comprises a syringe, a handle is mounted on one side of the syringe, a piston rod movably connected with the handle is arranged on the handle in a penetrating manner, a piston is fixedly connected onto the piston rod, the piston is slidably connected with the inner wall of the syringe, a screw is mounted on the piston rod, and the piston rod is fixedly connected with the inner wall of the syringe. A push-pull handle is fixedly connected to the end, away from the piston rod, of the screw rod, an injection needle is installed at the end, away from the handle, of the injection barrel, a medicine suction pipe is installed at the bottom of the injection barrel, a finger groove is formed in the handle in a penetrating mode, a groove is formed in the face, opposite to the handle, of the push-pull handle, and a protection pad is installed in the groove. The device is simple in structure and convenient to use, can save one hand of a v