Packaging is the external performance and marketing method of the product. For packaging, many countries have set a concise and clear definition. For example, in the United States: packaging is a preparation for the shipment and sale of products; in the UK: packaging is an artistic, scientific and technical preparation for the transportation and sales of goods; Canada believes that packaging is the preparation of products from the supply It is a tool that can be delivered to customers or consumers and can keep the product in good condition; my country’s definition of packaging is: the general term for the protection of the product in the circulation process, the convenience of storage and transportation, and the auxiliary goods that promote sales. Nowadays, people have a more complete understanding of packaging, giving it a broader meaning. From the point of view of system theory, the purpose, requirements, constituent elements, functions and actual operations of packaging are linked to form a complete packaging concept.