1. Safety: The components of prefilled syringe are sourced from professional plants worldwide at the top level of quality, these ensure the stability with drug. The prefillable syringe minimize crossinfection occurred from compounding prescription. 2. Immediate effect:prefilled syringe is easy operating and provide quick drug delivery, it can be used for emergency. 3. Increase the availability of drug, lower costs: dosage of prefilled syringe is accurate, and it can reduce the residue and medicine adsorption occurred from compounding prescription.This is very important for those expensive drug, to lessen drug waste.