First, the possible impact on human health; The second is to influence the environment through the ecological chain.

Food safety factors to be considered: the direct impact of genetically modified products, including nutritional components, toxicity or the possibility of increasing food allergens; Indirect effects of transgene include introducing transgenic gene fragments, leading to gene mutation, thus changing metabolic pathways, so that the final product may contain new components or change the content of existing components. For example, after introducing genes with herbicide resistance or harmful pests into plants, can the expression products of these genes enter the human body through the food chain like other harmful substances? After genetically modified food enters the gastrointestinal tract, will the foreign genes in it be transferred to gastrointestinal microorganisms, thus affecting human health.