A veterinary syringe is a medical device that injects medication into animals. Ordinary veterinary syringes are composed of a syringe, an injection needle, and a piston rod. Special purpose and functional veterinary syringes are mainly modified and upgraded based on this foundation. Veterinary syringe are mainly used for vaccine and other kinds of Drug injection of livestock, and are one of the indispensable medical devices for disease prevention in livestock production. Unlike human syringes, which are mainly disposable syringes, veterinary syringes have many products that can be reused multiple times to reduce the cost of a single injection. Farmers will use several different syringes simultaneously to meet the requirements of farming.