Pediatric viral enteritis is one of the most common causes of pediatric diarrhea, the pathogen is mainly rotavirus, which occurs in children from 6 months to 2 years old, with a higher incidence in autumn and winter, so it is also known as “autumn diarrhea”. Rotavirus has a strong ability to survive in the environment, and the pathogen is transmitted mainly through the fecal and oral routes, but can also cause disease through respiratory infection in the form of aerosols. The virus can multiply in the human small intestinal villous cells, causing damage to the intestinal mucosa and affecting digestive and absorption functions. The main clinical manifestations are acute fever, vomiting and diarrhea. At the beginning, the symptoms of fever and upper respiratory tract infection, such as fever, cough, red throat, runny nose, etc., depression, loss of appetite; vomiting often occurs in the first 1-2 days of the disease, followed by diarrhea, diarrhea 5-6 times a day, more than 10-20 times, the stool is egg-flower soup-like or watery, with sour odor, because of the less bile, the color of the stool is light, so also known as “white Diarrhea”; often accompanied by abdominal pain, crying and other symptoms. Because diarrhea leads to a large loss of water and salt, it is easy to cause dehydration, acidosis and electrolyte disorders in children. The duration of the disease is mostly about 1 week. Currently, there are no specific drugs for viral infections, so rotavirus enteritis mainly relies on symptomatic and supportive treatment. For children with mild to moderate dehydration, oral rehydration can be taken, and the standard formula of oral rehydration salts (ORS) can be chosen, and parents only need to dilute it to a certain volume for their children as required, and dehydration can generally be corrected; severe cases require immediate intravenous rehydration. At the same time, the child can take oral micro-ecological preparations, such as Saccharomyces boulardii or Mamma’s Anatomy, to help restore the normal intestinal flora; also can take Simethicone or Bicil, etc., to adsorb and promote the elimination of viruses and toxins. In terms of diet, fasting is not advocated, but it should be adjusted to less frequent meals and easily digestible foods such as thin rice and noodles. It should also be noted that young children should stop feeding greasy and meaty foods; children who are adding complementary foods should suspend complementary foods or reduce the number and amount of complementary foods; small infants can continue to feed milk, but try to do so in small amounts and many times.