The common cases of food poisoning are as follows: 1. Self-healing: Mild food poisoning can be self-healing. If the human body has mistakenly taken unclean food or toxic food, first of all, the gastrointestinal tract will have a rejection reaction and can promote the discharge of food through vomiting, diarrhea and other methods, thus reducing the impact of toxins on the body. The food poisoning is usually self-healing through a period of time. 2. Not self-healing: In case of moderate to severe food poisoning, in addition to gastrointestinal reactions, there will be systemic reactions, such as dizziness, nausea, vomiting, or serious conditions such as blurred consciousness, shock, and impairment of liver and kidney functions, it will not be self-healing and you must go to It is necessary to go to a hospital for emergency and regular treatment in order to be cured.