Food packaging bags, as the name implies, are film containers used to hold and protect food, which are in direct contact with food, so the correct use of food packaging bags is very important to us. 11. In daily life, food packaging bags should be avoided to be heated in the microwave oven., It is necessary to use food packaging bags to heat in the microwave oven. Pay attention to the use of special food packaging bags for microwave ovens to avoid damage to the food. 2, In daily life, high-temperature food should be avoided to be stored in food packaging bags for a long time, and plastic packaging bags should be used to hold directly imported hot food,temperature exceeds50℃, food packaging bags will release toxic gas, and long-term consumption of food packaging bags containing high-temperature food will cause dizziness, nausea, vomiting, diarrhea and other discomforts, and even cause lead poisoning and increase the risk of cancer. 3,Because ordinary food packaging bags do not have good air permeability and freshness preservation performance, so ordinary food packaging bags should not be used in daily life to store food in the refrigerator. Ordinary plastic packaging bags will cause food to deteriorate and rot quickly if used for a long time , can not achieve the purpose of preservation.