For children with fever and smelly mouth, the following measures can be used to improve the situation: First, children can be given antipyretic drugs. If a child’s fever exceeds 38.5°C under the armpit, give the child an antipyretic drug such as acetaminophen or ibuprofen in a timely manner. Secondly, children should be given anti-fever medications. Because the reason why children have a smelly mouth is mostly caused by indigestion, children can be given medications such as Wang’s Bao Chi Wan or Bao He Wan to relieve the problem, as these medications can play a good role in eliminating food and resolving stagnation. In addition, children should be given antibacterial medications. Some children’s fever and smelly mouths are caused by bacterial infections, which can even cause children to develop mouth ulcers, so cephalosporins should be applied to children to fight infections.