Fever is a common symptom in children. The body temperature of children can fluctuate with climate, diet, crying, and the thickness of clothing, etc. Fever is also a manifestation of many diseases at the beginning. In general, the normal body temperature of children is 36℃ to 37℃ in the axilla, and if it exceeds 37.4℃, it can be considered as fever. When a child’s body temperature exceeds 38.5 ℃, it is necessary to do antipyretic treatment. For various reasons, many parents often put a lot of clothes on their children or cover them with very thick blankets when they have a fever, in order to make them sweat, thinking that this will reduce the fever; some parents do not know what to do except to take their children to the hospital; some parents even think that they should go to the hospital to let the doctor see how high the child’s fever is, so that the doctor can diagnose it or the doctor can give the child The doctor will be able to diagnose or cure the child. As a result, many children have convulsions due to high fever before going to the hospital, on the way to the hospital, or after arriving at the hospital without heat treatment, and the fever convulsions add to the parents’ worries. What these parents do not know is that if a febrile child comes to the hospital with a temperature over 38.5°C, the doctor is required to administer antipyretic treatment first because it reduces the risk of febrile convulsions. So reducing fever first is one of the important measures to reduce febrile convulsions in children. How to reduce fever in children is a common sense that many parents need to know, and physical cooling is one of the fast and safe and reliable methods. First of all, we should pay attention to indoor ventilation, and reduce the clothes and blankets when children are feverish, so that they can achieve the purpose of heat dissipation, especially for small infants. We usually talk about packing cooling for infants and toddlers, which is one of the common cooling methods for infants. However, care should be taken to cover the child’s abdomen to prevent it from getting cold. Pre-hyperthermia chills are a concern for many parents. Some children have flushed skin and cold hands and feet before a high fever, which is caused by the pyrogen and occurs after a series of pathophysiological reactions, and parents should pay attention to keeping the child warm, especially the extremities, or give the child some warm drinks. When a child’s body temperature exceeds 38.5°C, physical cooling is usually one of the most important measures to safely and effectively reduce the risk of convulsions due to hyperthermia. Physical cooling is appropriate for children with high fever and good circulation. There are many methods of physical cooling, and parents can usually do it themselves at home. The main methods are cold compresses on the head, warm baths or warm water baths. These methods are easy to do and do not have the adverse effects of medication. Cold head compresses are suitable for general fever in children. The method is to soak a towel with cool water and put it on the forehead of the child, and change it in time; you can also use a water bag filled with cool water, pillow under the head, to achieve the purpose of head cooling. Warm water wipe bath is suitable for the cooling of children with high fever, especially children with a history of high fever convulsions. The method is to wipe the child’s skin with warm water. The water temperature should not be too high, the focus of wiping parts for the neck, armpits, groin, N fossa and other large blood vessels towards the parts, and stay in these parts for more time, while rubbing bath massage, so that the blood vessels can expand, to achieve the purpose of the whole body heat dissipation. But be careful not to wipe the back of the neck, chest, abdomen, because these parts are more sensitive to cold stimulation, which can reflexively cause the occurrence of adverse reactions such as slowed heart rate and diarrhea. Pay attention to covering the child’s abdomen when wiping to prevent it from getting cold, and pay attention to keeping the child warm after wiping. If the child is in good spirits, you can use the warm water bath method, so that the cooling effect will be better. After the warm bath, cover the child with clothes, let the child rest, and drink more warm water. In addition, pay attention to the changes in the child’s condition when bathing, if the child has chills, pale and other abnormalities, you should stop bathing and promptly seek medical attention. It is worth mentioning that the use of alcohol baths is no longer advocated. Drug cooling should be carried out under the guidance of a physician. Regardless of the cause of the fever, the child should first be allowed to lie down and rest, while giving more children to drink water, which can increase the amount of urine, so that the child more sweating, not only to cool down, but also conducive to the discharge of toxins. Because of the rapid changes in pediatric conditions, children with fever should be seen in a timely manner after proper heat treatment to avoid delays.