Degradable plastics refer to a type of plastic whose products meet various performance requirements, remain unchanged during the storage period, and can degrade into environmentally friendly substances under natural environmental conditions after use. Therefore, it is also known as environmentally degradable plastics.

Many citizens use plastic bags as garbage bags, but many countries and regions have banned or restricted the use of plastic bags. The San Francisco City Council passed a bill prohibiting retailers such as supermarkets and pharmacies from using plastic bags. In cities such as Los Angeles, the government has launched plastic bag recycling campaigns. Some places in countries such as Canada, Australia, and Brazil have also introduced regulations prohibiting plastic shopping bags or paid use.