(1) First, consider the relationship between diarrhea and food eaten, and leave food samples to rule out the possibility of food poisoning. Leave stool samples for laboratory test in time, and find out the cause and then give symptomatic treatment.

(2) Fasting temporarily and keeping your abdomen warm. Encourage drinking more light salt water (with a little sugar) to prevent dehydration. When dehydration symptoms such as thirst, scanty urine, dry and wrinkled skin and sunken eyes have occurred, patients with severe vomiting who can't drink water or have been dehydrated should actively undergo intravenous fluid replacement, except oral light salt water.