When the patient has a high fever, the physical cooling methods that can be used include warm water bath, applying antipyretic patches, wearing ice caps or applying ice packs. 1. Wipe with warm water: take half a basin of 32-34℃ warm water, soak a clean towel and wring it to half dry, wipe the patient’s forehead, cheeks, carotid aorta, armpits, groin and limbs and other parts of the body, and also let the patient with high fever take a warm bath to promote heat dissipation. 2. Apply fever-reducing patches: several medical fever-reducing patches can be applied to the patient’s forehead, carotid artery, armpits, groin and other parts of the body to help cool down the body. 3. Wear an ice cap or apply an ice pack: patients can also wear an ice cap, apply an ice pack to cool down, during the cold compress, pay attention to the observation of the local skin color, if pale, cyanosis, etc., should be stopped immediately, to prevent the occurrence of blood circulation disorders or frostbite. Patients in the physical cooling at the same time should be appropriate supplemental water, to prevent dehydration, if the high fever symptoms for a long time can not be relieved, or the emergence of other uncomfortable reaction, should promptly seek medical treatment.