It has been nearly a century since the birth of the first glass bottle of intravenous infusion in the world in 1920. In medicine, an infusion is called intravenous drip or intravenous infusion, which is a treatment method in which drug-containing liquid is injected into the body through a vein. Intravenous infusion has gone through three generations in terms of packaging: open, semi-open, and fully closed. Among them, the fully enclosed packaging mostly uses plastic soft bags, which are more and more widely used. Among them, the safety and environmental protection of non-PVC multi-layer co-extrusion composite films have been recognized by the public and become an international and domestic development trend.