Fever in children is a common symptom, many diseases can cause fever, fever is a defensive reaction of the body. The normal basal body temperature of children is 36.9℃~37.5℃, generally when the body temperature exceeds the basal body temperature by more than 1℃, it can be considered as fever, hypothermia means that the body temperature fluctuates around 38℃, and a body temperature above 39℃ is considered high fever. 39 ℃ high fever for children is very common, do not worry too much, baby fever more than 38.5 ℃, you should consider using oral medicine to reduce fever, or anal plugs, to reduce fever to the baby, you can routinely use some pediatric antipyretic drugs such as acetaminophen and ibuprofen such as heat treatment, but these two antipyretic drugs to choose one of them, effective for children can be, as far as possible, do not alternate, but also You can also work with physical cooling, using warm water to rub the baby’s neck, armpits, groin and other places where large blood vessels pass through, and small babies generally do not need alcohol baths because of their delicate skin. Many parents think that when you have a fever, you need to help your baby reduce the fever as soon as possible in order to be safe. In fact, if the disease is only mild, the fever will appear for about two to three days, and the right attitude towards fever is to find out the reason behind the fever, rather than just asking for the fever to go down, sometimes the fever presents a special condition of the body, and using antipyretics to quickly reduce the fever can sometimes cover up the symptoms and affect the doctor’s judgment. When the baby’s temperature rises, he or she should loosen the clothes and blankets appropriately to avoid over-warming, which can lead to a further rise in body temperature. He or she should drink more water appropriately or use fruit juices containing water or low-sugar drinks to replenish water, and pay attention to rest to avoid overexertion. If the child’s temperature has exceeded the level of hyperthermia, the child feels uncomfortable, or the child is in poor mental condition, shortness of breath and pale, the child should seek medical attention promptly.