Infants and young children with body temperature over 37.℃2 is a fever, 37.3-38 ℃ is a low fever, generally do not need special treatment, with the cooling patch can play a slight role. 38.1-39 ℃ is a moderate fever, this stage needs to be dealt with according to the situation, 38.5 ℃ or more than the application of fever-reducing drugs. If the baby does not reach this temperature, but uncomfortable, crying and restless can also be applied in advance antipyretics. There are two main choices of antipyretics, including ibuprofen and acetaminophen, and the dosage should be calculated according to the baby’s weight. after taking the medication, the temperature cannot be lowered immediately, and physical cooling can be carried out at the same time, for example, wiping the parts of the neck, armpits and groin where large blood vessels travel with lukewarm water, or giving the baby a warm bath can help to lower his or her temperature. after one hour the medication takes effect, and the temperature can be lowered by 1 ℃ or more. a temperature of 39 ℃ or above is considered high fever. Temperatures above 39℃ are considered high fever, and the patient should also apply fever-reducing medication immediately, and it is recommended to go to the hospital after the fever has subsided.