Rotavirus (rotavirus) enteritis is an acute infectious disease of the gastrointestinal tract caused by rotavirus. The pathogen is mainly transmitted through the gastrointestinal tract, and enteritis caused by group A rotavirus occurs mainly in infants and young children, with peak incidence in autumn, hence the name autumn diarrhea in infants. Every year around the Chinese New Year is the season when pediatric rotavirus enteritis is on the line, and most of the children with the disease are within 2 years of age. Prevention: cutting off the transmission route is the focus of this disease prevention: 1, housekeeping the source of infection: should be early detection of children and isolation of children, close contacts and suspected children to implement close observation. 2, cut off the transmission route: strengthen diet, drinking water and personal hygiene, do a good job of disinfection of the child’s feces; prevent the source of drinking water and food is contaminated. If children cannot control their stools, they should be restricted from entering day care or school. 3. Vaccination: The vaccine for rotavirus is available for clinical application. During the epidemic period, the use of passive immunization for high-risk and susceptible populations also has a certain preventive effect. Human milk can have a protective effect to some extent. Breastfeeding is advocated to reduce the severity of illness in young children. Milk from yaks immunized against bovine rotavirus contains iga and igg antibodies, and feeding infants with such milk is also protective.