Infantile gastroenteritis is relatively common in clinical practice, the reason why it is easy to suffer from gastroenteritis is because of the relatively poor resistance and immunity in infancy, especially the natural barrier function of the gastrointestinal tract, the immunity is relatively weak, and the establishment of the intestinal micro-ecosystem is not sound, it is easy to be attacked by pathogens, such as viruses, bacteria, and so on. If cross-infection is caused by improper diet or localized exposure to cold or lack of attention to hand hygiene at home, gastroenteritis caused by viral and bacterial infections can easily occur. Common viruses include enteroviruses such as rotavirus, norovirus, coxsackievirus, etc., and some of them are also caused by bacterial infections. This situation is usually easy to cause nausea, vomiting, diarrhea, etc., should be actively treated, you can take oral thioglycollate gel to protect the stomach to stop vomiting, fasting with montelukast to stop diarrhea, there are also probiotics to regulate the gastrointestinal function, spare hypotonic oral rehydration salts to prevent and correct dehydration. Also do a good job of diet and perianal skin hygiene management, if there is severe vomiting, recurrent high fever, poor mental health should see the pediatric emergency room.