Neonatal diarrhea is an intestinal disease with a very high incidence during the breastfeeding period. In some areas where medical conditions are poor, neonatal diarrhea is often an important cause of death in children. Therefore, once diarrhea occurs in newborns, it should be given attention. The first thing to do is to find the cause of diarrhea in newborns and treat it for that cause. For example, antibacterial treatment is used for bacterial causes, antifungal treatment for fungal causes, and anti-allergic treatment for milk allergy. On the other hand, symptomatic treatment for neonatal diarrhea is needed to prevent dehydration. Generally, if a newborn is mildly dehydrated, he can be treated with oral rehydration or given salt and sugar boiled water. If the newborn has severe diarrhea, severe dehydration, accompanied by vomiting, intravenous fluids should be administered. Newborn diarrhea should pay attention to keep the abdomen warm, when changing diapers, diapers must cover the belly, you can wear a small belly bib to prevent the abdomen from getting cold. Secondly, observe the number of times the baby has diarrhea and the nature of the stool. If the number of times the baby has diarrhea is more than 10 times a day, the stool is thin and watery, you need to take montelukast and tetracycline tablets to stop diarrhea and protect the intestinal mucosa in a timely manner. At the same time, we should pay attention to feeding the baby more water to prevent dehydration.