Catering industry, its main content is that organizations or individuals engaged in this industry (such as restaurants, hotels, food processing plants) can meet the dietary needs of diners by processing food, so as to obtain corresponding service income. Because people in different regions and cultures have different eating habits and tastes, restaurants around the world have diversified characteristics. The catering service can only be used once and enjoyed on the spot, which means that the service can only be carried out after the guests enter the restaurant, and the service will naturally terminate when the guests leave the restaurant.