Before the cause is identified, changes in stool characteristics and an increase in the frequency of bowel movements are collectively referred to as diarrheal disease. Diarrheal disease is a group of diseases caused by multiple causes and factors. It is one of the diseases with the highest incidence in childhood and a global public health problem. At least 1 billion people suffer from diarrhea each year worldwide. According to a survey by the World Health Organization, about 10,000 people die from diarrhea every day. In my country, diarrheal disease is also a common disease among children. On average, each child suffers from it 3.5 times a year, and the mortality rate is 0.51%. Therefore, the prevention and treatment of diarrheal disease in children is very important.