Parents should keep the child as quiet as possible to reduce the number of vomiting episodes. In the early stages of rotavirus gastroenteritis, the child is predominantly febrile and vomiting. During vomiting, it is difficult to eat fluids. At this time, parents should keep the child as quiet as possible to reduce the number of vomits. Also, inducing bowel movements is an effective way to stop vomiting, and the early discharge of toxins from the gastrointestinal tract is conducive to early recovery from the disease. In addition, acute gastrointestinal damage during rotavirus infection causes infants and children to have limited access to food. The first step is to ensure the intake of fluids (oral or intravenous fluids), and then there is nutritional support. During enteritis, the lactase enzyme in the small intestine mucosa is damaged to varying degrees resulting in poor digestion of lactose and lactose intolerant diarrhea. For this reason, in addition to proper maintenance of breast milk, special lactose-free powdered formula should be used to provide nutrition. The natural course of rotavirus gastroenteritis is between 5 and 7 days. The long duration of diarrhea in some infants should be considered as a result of late lactose intolerance. Moreover, lactose intolerance is a problem to varying degrees 2 to 4 weeks after rotavirus infection. It is recommended that formula-fed infants be switched to lactose-free powdered formula. Breast-fed children generally do not require special attention, and if diarrhea is still severe, insist on breast-feeding while adding “lactase”. Rotavirus diarrhea is not treated with specific medications, care attention: 1. provide sufficient water; 2. add electrolytes and sugar appropriately, oral rehydration salt is best; 3. take probiotics; 4. switch to lactose-free formula when feeding powdered formula, lactase can be added when breastfeeding.