First of all, it is very common for babies to have a fever at night, because children are small and most fevers are caused by infections, which can be viral or bacterial. When an infection occurs, if it is during the day, the child’s body functions are more active, so the resistance is stronger, and the detoxification function of the liver is stronger, so it is less likely that a viral or bacterial infection will occur at this time. However, at night, the child’s body functions tend to be stable and not so active, so the resistance is relatively weak, and bacterial or viral infections at this time can easily lead to fever. Especially when the body temperature is greater than 38.5 ℃, it is easy to cause the occurrence of high fever convulsions, it is recommended to take oral ibuprofen suspension or acetaminophen pellets for antipyretic treatment. In addition, it is best to put a fever-reducing patch on the forehead, which can protect the function of the brain.