According to the source of raw materials, biodegradable plastics can be divided into two categories: Bio based biodegradable plastics and petrochemical based biodegradable plastics.

Bio based biodegradable plastics can be divided into four categories: the first is the plastics directly processed from natural materials; the second is the polymers obtained by microbial fermentation and chemical synthesis; the third is the polymers directly synthesized by microorganisms; the fourth is obtained by blending these materials or by blending these materials with other chemically synthesized biodegradable plastics Biodegradable plastics obtained by the process.

Petrochemical based biodegradable plastics refer to the plastics obtained by the polymerization of monomers of petrochemical products by chemical synthesis, such as PBAT, poly (butylene succinate) (PBS), carbon dioxide copolymer (PPC), etc.