Food safety means that food is non-toxic and harmless, meets nutritional requirements and does not cause any acute, subacute or chronic harm to human health. According to the definition of food safety, food safety is "a public health problem in which toxic and harmful substances in food affect human health".

Food safety is also an interdisciplinary field, focusing on ensuring food hygiene and food safety, reducing potential diseases and preventing food poisoning in the process of food processing, storage and sales, so food safety is very important. Whether we can give people a satisfactory explanation on food safety is a great test of our ruling ability. Food safety is managed.

Food planting, breeding, processing, packaging, storage, transportation, sales, consumption and other activities meet the mandatory national standards and requirements, and there are no hidden dangers that may damage or threaten human health, lead to the death of consumers or endanger consumers and their descendants.

Food safety includes both production safety and operation safety; Including result safety and process safety; It includes both present security and future security. Food safety means that food is non-toxic and harmless, meets nutritional requirements and does not cause any acute, subacute or chronic harm to human health.

The meaning of food safety has three levels:

1, the first level: food quantity security, that is, a country or region can produce the dietary needs needed by the basic survival of the nation. People are required to be able to afford the basic food needed for survival and life.

2. Layer 2: Food quality and safety means that the food provided meets and guarantees people's health needs in terms of nutrition and hygiene. Food quality and safety involves food pollution, whether it is toxic, whether the additives violate the rules and exceed the standard, and whether the labels are standardized. It is necessary to take measures before food is polluted to prevent food pollution and the invasion of major harmful factors.

3. The third layer: sustainable food safety, which requires that the acquisition of food should pay attention to the good protection of the ecological environment and the sustainable utilization of resources from the perspective of development.