The biggest benefit of paper bags is environmental protection, because paper bags can be thrown away as garbage, and can be quickly degraded under the natural action of microorganisms, water, oxygen and so on, and decomposed into harmless substances. Unlike plastic bags, one is chemical products, and some bad businesses use toxic plastics such as PVC as food bags, which will affect the human body for a long time. Second, plastic bags are not easy to degrade, a hundred years or more can not return to nature, which is called white pollution.