According to the definition of Baidu Encyclopedia's food industry chain, it is agricultural production-food industry, which consists of farming (breeding), fishing, feeding, food processing, manufacturing, circulation, catering and related industries (such as information, machinery, chemicals, packaging, medicine, etc.) and departments (such as import and export, supervision, testing, education, scientific research, etc.). The former agricultural planting (breeding) industry, fishing industry, feeding industry, food processing, manufacturing industry, circulation industry, catering industry and related industries (such as information, machinery, chemical industry, packaging, medicine, etc.) and departments (such as import and export, supervision, testing, education, scientific research, etc.) are the organization of food industrial chain, and the latter agricultural production-food industry-circulation system is the basic element.