Green food is the general name of safe, high-quality and nutritious food without pollution in China. Refers to the pollution-free, pollution-free, safe, high-quality, nutritious food that is produced according to a specific mode of production and approved by the relevant state specialized agencies. Similar foods are called organic food, ecological food and natural food in other countries. Organic food is a foreign word, a literal translation of English 1rganicFood, a product of organic agriculture, and also known as ecological food and natural food. According to the definition of the International Federation of Organic Agriculture (IFOAM), organic food is produced and processed according to the production and processing standards of organic agriculture and organic food, and all foods that are certified by authorized organic certification organizations for people to eat. Difference: ① Different places of origin. Organic food and organic agriculture originated in Europe, green food originated in China, pollution-free food mainly originated in China, and the word "pollution-free" was introduced from abroad.

② different signs. Organic food has different labels in different countries and different certification bodies. The green food label is unique. The label of pollution-free food has different labels in different certification bodies.

③ certification bodies are different. China Green Food Development Center is responsible for the unified certification and final certification approval of green food in China, and the green food offices of all provinces, municipalities and districts assist in the certification. The certification of organic food is a comprehensive certification by the Organic Food Development Center of the State Environmental Protection Administration; Second, organic tea is certified by the Organic Tea Research and Development Center of Tea Research Institute of China Academy of Agricultural Sciences; Third, some foreign certification bodies of organic food carry out organic food certification in China. There are many certification bodies for pollution-free food. Only when the trademark is officially registered in the Trademark Office of the State Administration for Industry and Commerce, or the provincial regulations are promulgated, its certification will have legal effect.

④ authentication methods are different. The inspector system is implemented in the certification of organic food, while the certification of green food is mainly based on inspection and certification, and the certification of pollution-free food is mainly based on inspection and certification, supplemented by inspection and certification.

⑤ different standards, different grades. The standards of pollution-free food, green food and organic food are different, but they can be generally divided into three grades, namely, pollution-free food is the basic grade, A-level green food is the second grade, and AA-level green food and organic food are the highest grade.