The syringe can be brought on the train can go through the security check?

No, Syringe belongs to the specialized medical equipment, also belongs to the sharp objects, there are restrictions. According to the railroad security regulations, in addition to flammable, explosive, toxic, corrosive, radioactive , infectious diseases pathogens and other substances as well as firearms, ammunition, control knives and other items that may jeopardize the safety of the public ****, not in the control of the knife within the scope of the kitchen knife, The knife, large fruit knife, craft knife, etc. are not allowed to carry.

Syringes are a common medical tool. As early as the 15th century, the Italian Catinel proposed the principle of syringe. It is mainly used to extract or inject gases or liquids with a needle. Syringes can also be used for medical devices, containers, such as some chromatography in the scientific instruments injected through a rubber diaphragm.

Overview

The emergence of the syringe was an epoch-making revolution in the field of medical devices. The process of extracting and injecting a gas or liquid with a needle is called injection. A syringe consists of a needle barrel with a small hole at the front end and a piston mandrel that matches it.

It is used to inject small amounts of liquid or gas into or withdraw it from areas that are inaccessible by other means, drawing the liquid or gas through the hole in the front of the barrel when the mandrel is withdrawn, and squeezing the liquid or gas out when the mandrel is pushed in.

The above reference? Baidu Encyclopedia-Syringes