Snack food is actually a kind of fast-moving consumer goods, and it is the food that people eat when they have a rest. The most appropriate explanation is food. The main categories are: dried fruit, puffed food, candy, meat food and so on. With the improvement of living standards, snack food has always been a favorite food of the broad masses of the people. When you walk into the supermarket, you will see snack foods such as potato chips, French fries, shrimp strips, ice cream, preserved fruit, sour horn cake, preserved plum, peanuts, pine nuts, almonds, pistachios, fish fillets, dried meat and spiced fried meat. Snack food is gradually upgrading into a daily necessity consumer goods. With the development of economy and the improvement of consumption level, consumers are increasingly demanding the quantity and quality of snack food.