At present, the U.S. UCC company has carried out mass production, and has been used for surgical supplies, mucous membrane, film remover, etc. PCL and PHB **** after mixing, can also prepare biodegradable plastics. Aliphatic polyester and nylon for the exchange reaction of amine and lipid, the synthesis of polyacylin*** polymer (CPAE), CPAE is a new type of biodegradable plastics.