Diarrhea occurs frequently in infants and young children because they have just started to add complementary foods and parents do not understand the characteristics of the infant’s digestive system, such as the thin intestinal wall, high permeability, and weak barrier function, so microorganisms and toxins in the intestine and hypersensitive substances can easily enter the bloodstream through the intestinal wall and cause disease, coupled with the low SIGA secretion in the intestine during infancy, it is easy to cause enteritis. In the infant period, due to the joy of hand sucking and indiscriminate eating of unclean food, it leads to various bacteria entering the intestine. Clinically, when diarrhea occurs, doctors often base on laboratory test reports. When the infection has a small amount of bacteria and there are clinical symptoms without positive laboratory reflections, doctors often treat it as general indigestion, which is actually infectious diarrhea. The clinical manifestations are diarrhea, unpleasant stools with mucus, low fever and irritability of the child (abdominal pain, bloating and other discomfort). However, the child often shows little change in appetite. At this point, it is important to pay attention to the reaction of enteritis. Chinese medicine is considered to be damp-heat diarrhea, can be used to treat the Chinese herbal medicine, often with significant results, if not paid attention to, it will evolve into chronic enteritis. It will be difficult to treat.