Babies with high fever and diarrhea often have acute gastroenteritis. There are two main causes of infection in acute gastroenteritis, the more common being viral infections. If it occurs in younger babies, but bacterial infections are not uncommon. First of all, we need to check the stool routine, if there is no elevated white blood cells in the stool routine, usually viral infections caused by high fever and diarrhea, generally do not need to use antiviral drugs to treat, but also need to use antipyretic drugs, this time it is recommended to give the baby orally ibuprofen suspension, or acetaminophen suspension for the treatment of fever. If the symptoms of diarrhea is more serious, pay attention to give oral rehydration solution, also need probiotics to regulate the intestinal flora, and the use of antidiarrheal drugs, such as Simethicone, the effect is also better, but also has the effect of protecting the mucosa of the gastrointestinal tract. If the elevation of white blood cells in the blood routine or stool routine, it may be caused by bacterial infection, need to use pediatric cefixime granules for anti-inflammatory treatment.