Gastroenteritis is one of the common diseases in infancy and early childhood. Babies with weak resistance and underdeveloped gastrointestinal functions are prone to indigestion and infections, leading to gastroenteritis. The symptoms of gastroenteritis are mainly gastrointestinal symptoms such as vomiting, diarrhea, abdominal pain, etc. Common symptoms of viral gastroenteritis include fever, vomiting, diarrhea, abdominal pain, or a combination of symptoms of upper respiratory tract infection. For example, if you are infected with rotavirus, the initial symptoms are similar to a cold, with fever and vomiting, and the vomiting subsides after a day or two, followed by diarrhea with watery or egg-flake stools, which are more frequent and can easily cause dehydration and electrolyte disorders in babies. The main symptoms of bacterial gastroenteritis include watery diarrhea, abdominal pain, vomiting, longer fever than the viral type, mucus-like stools or blood-stained stools, and sometimes a fishy smell. There is a history of unclean food such as eating spoiled food. Some babies have gastroenteritis symptoms of vomiting and diarrhea due to gluttony, food that is too cold and too mixed, usually without fever, thin stools, stools without pus and blood, and a relatively small number of infectious ones. The baby inadvertently suffers from gastroenteritis, especially the infectious one, with relatively heavy symptoms, and needs to seek medical attention promptly. The risk of gastroenteritis can be effectively reduced by strengthening prevention, practicing good hygiene habits and getting vaccinated against rotavirus on time.