Environmental protection experts pointed out that although non environmental protection bags bring many convenience to the public, on the other hand, they pollute the environment. Some non environmental protection bags cannot be used to pack food, which will cause serious harm to human health. Medical experts pointed out that food, especially cooked food, is often prone to deterioration after being packed in non environmental protection bags. After people eat such deteriorated food, they are prone to vomiting, diarrhea and other food poisoning symptoms. In addition, the plastic itself will release harmful gases. Because of the long-term accumulation in the sealed bag, the concentration increases with the increase of sealing time, resulting in different degrees of food pollution in the bag, especially the impact on children’s health and development.