Garbage bag, as the name suggests is a garbage bag, a small bag, but to the tens of thousands of households to bring a small convenience, but also for environmental protection provides an important guarantee, and even conducive to garbage collection classification. Many people use plastic bags as garbage bags, but many countries and regions have banned or restricted the use of plastic bags. The San Francisco Congress has banned the use of plastic bags by retailers such as supermarkets and pharmacies. In cities like Los Angeles, the government started to launch plastic bag recycling activities. Canada, Australia, Brazil and other countries have also introduced a ban on plastic shopping bags or paid use of the provisions.