Physical cooling is the easiest, most effective and safe method of cooling for patients with high fever, in addition to medication. Its use has volatility, which can absorb and take away a large amount of heat material, so that the body temperature drops and symptoms are relieved. There are more methods of physical fever reduction, including ice packs, warm water rubs, alcohol rubs, etc. So, you can put the ice pack on the forehead, but the ice needs to pay attention to the following aspects: 1, the ice should not be too large, you can use hard objects to crack it, put it into cold water to wash away the angles, to avoid the angles cause patient discomfort and damage to the ice pack; 2, the ice should not be filled with too much, to facilitate the contact between the ice pack and the skin; 3, the ice should be filled with the ice should be discharged from the ice pack gas, because the air can accelerate the melting of the ice; 4, pay attention to Check for breakage and leakage; 5. Place the ice bag inside the cloth cover to avoid direct contact between the ice bag and the patient’s skin, which may cause discomfort; 6. When placed on the forehead, the ice bag should be suspended on a stand to reduce local pressure, but the ice bag must be in contact with the skin for no more than 30 minutes. In addition, in addition to the use of physical cooling in the head to reduce fever, other parts of the body can also be cooled by cold wet compresses or alcohol baths, including the palms of the hands, armpits, elbow fossa, groin, popliteal fossa and other places. Because more blood is gathered in these areas, wet compresses or wipes can be applied with a little force and extended dwell time to promote heat dissipation.