When the body temperature reaches 37.5 ℃ and less than 38.5 ℃, you can use the antipyretic paste, the manufacturer of different, the replacement time of the antipyretic paste also exists a certain difference, generally 4-8 hours. The use of antipyretic paste belongs to a kind of physical cooling, the principle is the antipyretic paste in the gel texture of the liquid into gas, evaporated into the air, so as to take away the heat of the patient’s body, to achieve the purpose of cooling. You can keep the antipyretic patch in the refrigerator during the day, and then take it out of the refrigerator when you need to use it, so that the effect is better. When using the antipyretic paste on the patient’s forehead, or the neck, occipital and groin and other large blood vessel parts, can better achieve cooling effect. It also contains certain herbal ingredients, which can prevent brain damage due to excessive heat when applied to the forehead, thus playing a role in protecting the brain. When using a fever reducing patch, it is important to hydrate the patient frequently. Also when the body temperature recedes to a normal level, the use of antipyretic patches should be stopped. For patients below 38.5℃, physical cooling with antipyretic patches, warm water baths and ice packs are all feasible measures. However, when the body temperature reaches 38.5℃ or higher, it is recommended that in addition to physical cooling, oral medications such as ibuprofen, acetaminophen and other antipyretic drugs should be taken for treatment. If the fever does not subside, it is recommended to take the patient to the hospital for examination and treatment.