Fever is generally considered when the oral temperature is higher than 37.5℃, the axillary temperature is higher than 37℃, or the difference in body temperature between one day is more than 1℃. 37.3℃-38℃ is low fever; 38.1-39℃ is moderate fever; 39.1-41℃ is high fever; more than 41 ℃ is ultra-high fever. What are the methods to reduce fever quickly in children? Physical cooling: Under the premise of raising the ambient temperature, using warm towels on the body, taking a warm bath, etc. to make the skin blood vessels dilate, this kind of fever reduction effect is the best. If the child has not defecated for more than 48 hours, you can temporarily use open cork. Do not put too many clothes on the child, which is not conducive to heat dissipation. Be sure to let the child drink plenty of fluids such as water, milk or rice soup. If a child does not like to drink water because of fever, parents should try to get the child to take small amounts of fluids. This is because even after taking fever-reducing medication, if the body is not hydrated enough to dissipate heat, the fever will not be reduced as effectively. If there is not enough water in the body, the antipyretic medicine will not work. Medication to reduce fever: If the child’s body temperature reaches 38.5℃, medication can be used to reduce fever. Because many times the temperature will continue to rise. Fever-reducing medications take effect right around 39°C. Acetaminophen, aminoglutethimide pellets, ibuprofen, etc. can be chosen to reduce fever quickly.