A comprehensive review of greenhouse emission reduction has become a core issue in recent years. Plastic products, which are closely related to our lives, have become the driving force behind greenhouse emissions without us realizing it. The life cycle of plastics, petrochemical refining, plastic production, plastic product manufacturing, and waste plastic treatment (combustion) are all related to greenhouse gas emissions. Therefore, in addition to reducing the reliance on plastic products, the recycling, separation and reuse of plastic products has been an ongoing issue in advanced countries, but even so, when the use of plastics reaches the end of its life, how to dispose of discarded plastics is still an indispensable part of net zero emissions.