Symptoms of abdominal pain, vomiting and fever in children are often due to acute gastroenteritis. The first thing to do is to check the child’s stool routine, followed by an ultrasound examination of the abdomen to rule out other abdominal diseases. At this time, the child should be given water and food fasting for more than 4 hours. If the vomiting is gradually relieved, the child can take water or a small amount of thin rice soup, which is often more effective. The child should also be given medication to promote digestion, such as noon tea pellets, stomach and food tablets, and cough pellets. For abdominal pain, treatment with antibiotics is needed. If there is an elevation of white blood cells in the stool routine, you can take pediatric cefixime granules, pediatric cefadroxil, amoxicillin, and amoxicillin clavulanic acid potassium by mouth. In addition, if the temperature of fever is high, more than 38.5 degrees, you also need to use antipyretic drugs for treatment, such as ibuprofen suspension, acetaminophen suspension.