Genetically modified food refers to a kind of food that uses molecular biological means to transfer the genes of some organisms to other biological species, so as to make them have new characteristics that the original species does not have. Genetically modified foods are divided into two categories: plant genetically modified foods and animal genetically modified foods.

At present, the common plant genetically modified foods are tomato, potato, beet, cucumber, rape, soybean, corn, wheat, rice, peanut, apple, grape, sweet orange, etc. Animal genetically modified foods include chicken, fish, cattle and sheep.