The surface of the glass syringe is smooth, the friction between the needle plug and the syringe is small, the twitch is free, the operation is convenient, and the price is low and the performance is stable. Compared with disposable syringes, glass syringes are significantly better than disposable syringes in terms of puncture success rate, automatic blood return, and time consumption. However, glass syringes are easy to break, there are risk factors for blood-borne infections, and cleaning, disinfection, and sterilization are relatively cumbersome. Currently, glass syringes are rarely used in clinical practice.