In the south, there is often a sharp increase in the number of children with diarrhea during the wet and cold season, mostly due to viral enteritis, and recently there are still more children with diarrhea, so let’s talk about viral enteritis. Viral enteritis is a group of acute intestinal infections caused by viruses. It can be caused by a variety of viruses, and the clinical manifestations of gastroenteritis due to various viruses are basically similar. Among the more common and well-studied are rotavirus and norovirus. The clinical features are rapid onset, nausea, vomiting, diarrhea, watery stools or thin stools, but also fever and general malaise. Fever and vomiting are usually early in the course of the disease. Children often vomit, and early vomiting is often violent, eat what vomits, the more you eat, so the vomiting period should let the gastrointestinal tract rest, do not advocate feeding a variety of gastrointestinal drugs, because this vomiting is a self-reaction of the body to expel the virus, the more into the stomach, the more vomiting, including many parents like to take patchouli oral liquid and other drugs, in fact, are unnecessary, this vomiting is a self-limiting symptoms This is a self-limiting symptom, which means that he will get better on his own, and most of the vomiting can be relieved on its own after 24 hours, so all we have to do during the vomiting period is to take good care of the child, let him rest well, and let him sleep when he can. In the early stage, vomiting or fever is the main cause and diarrhea is not obvious, but after vomiting or fever, diarrhea starts to increase, which is the natural process of the disease. Whether or not to administer fluids during diarrhea still depends on the severity of the child’s dehydration, which can be judged by mental status and urine output. Most of them can take oral rehydration solution, such as some oral rehydration salt flush, or they can use rice soup with a little salt instead. The diarrhea is generally recommended to stop the diarrhea, which usually lasts for several days and cannot be treated with strong antidiarrheal drugs. Many viral diseases are self-limiting, that is, they will get better on their own. Inappropriate interventions can make the disease more complicated.