In general, children with a fever over 40 degrees may suffer brain damage. When the fever reaches 40 degrees or higher, the duration of more than 30 minutes, may destroy the protein structure of the brain cells, thus producing irreversible damage to the nerve cells and tissues of the brain. When a child has a fever, if the temperature does not exceed 38.5 degrees, some physical methods can be used to lower the child’s temperature, such as placing antipyretic patches on the head to prevent the temperature from rising gradually. If the temperature exceeds 38.5 degrees, or high fever persists should be sent to the hospital in a timely manner, to find a professional doctor for medication to reduce fever and the corresponding treatment, to avoid the child to appear fever convulsions (due to the high temperature caused by convulsions convulsions) of the phenomenon, which leads to brain damage. Daily attention should be paid to children to keep warm, to avoid catching cold, children should also be appropriate exercise, enhance physical fitness, in order to prevent colds, fever, usually can eat more nutritious food, replenish the body’s nutritional needs.