Food packaging is an integral part of food commodities. One of the major projects in the process of food industry. It protects food and prevents food from being damaged by external factors such as biology, chemistry and physics when it flows to consumers. It also has the function of keeping the quality of food stable. It is convenient for food to eat, takes the lead in showing the appearance of food, attracts consumption, and has value other than material cost. Therefore, food packaging technology is also an inseparable part of food manufacturing system engineering. But the universality of food packaging technology makes it have a relatively independent self-system.