1, the onset is explosive: the incubation period is short and the momentum is fierce, and most people can get sick in a short time;

2. Similar clinical symptoms: Poisoned patients have similar general symptoms, mostly nausea, vomiting, abdominal pain, diarrhea and other digestive tract symptoms;

3. The onset is related to food: the patient has eaten the same food recently, and the onset is limited to those who eat this toxic food. After stopping eating, the disease soon stopped;

4. Food poisoning is not contagious, and there is no infectious process between individuals.