PCR recycled plastics has become one of the important directions to reduce environmental pollution of plastics and help the chemical industry to move towards "carbon neutrality". The production process of plastics includes oil extraction, transportation, oil refining, chemical industry, etc., which is a long process with high energy consumption, while the energy consumption of waste plastics recycling mainly comes from sorting, crushing, granulation, etc. Compared with virgin plastics, it shortens the process and reduces energy consumption, which is beneficial to carbon emission reduction. Carbon reduction and environmental protection plastics currently have renewable plastics, biodegradable plastics, new materials, such as plastic products, such as the comparison of production links only, compared with virgin plastics, each use of 1 ton of waste plastics production of recycled plastics can reduce carbon dioxide emissions of about 2.9 tons or so.