Poly(lactic-co-glycolic acid)s (PLGA) is randomly polymerized from two monomers-lactic acid and glycolic acid. It is a degradable functional polymer organic compound with good biocompatibility, non-toxicity, good Capsule-forming and film-forming properties are widely used in pharmaceuticals, medical engineering materials and modern industrial fields. In addition, PLGA has also passed FDA certification and was officially included in the Pharmacopoeia as a pharmaceutical excipient.