Disclosed is an automatic veterinary syringe which has the essential structure of continuous and automatic suction of blood and liquid samples of an animal and/or injection of medicine liquid thereto using motor and other electronic parts. The automatic veterinary syringe has automatic quantification based on the desired volume since the syringe barrel is replaceable. Continuous injection can be realized at a controlled pressure and the quantification of the liquid sucked and medicine injected into animal body is accurate. The utility model is mainly used for veterinary, is especially suitable for the injection of numerous amounts of small and large animals, has the advantages of high injection efficiency, and favorable effect to animals and administrator.
