Physical fever reduction is a simple and effective cooling method for patients with fever, commonly used physical fever reduction methods are bath rubbing method, ice bag cooling method, enema cooling method, etc. 1, bath rubbing method: bath rubbing method mainly has warm water bathing method and alcohol rubbing method. Warm water bath method is to use 32 ℃ -34 ℃ of warm water to the patient’s whole body bath, in wipe the limbs, neck, popliteal fossa, axilla, groin and other vascular rich places, should be appropriate to extend the time, the use of evaporation effect to help heat dissipation. The principle of alcohol bathing is to make alcohol volatilize and absorb heat, while alcohol can also make local blood vessels dilate and blood flow increase, which can accelerate metabolism and take away body heat, thus achieving the effect of reducing fever. Can also be used 30% -50% alcohol dissolved in water, with alcohol-soaked towels wrapped around the hands, the patient for bathing, but patients with bleeding tendencies, rashes and other blood disorders, as well as young children, can not be alcohol bathing method; 2, ice bag cooling method: ice bags placed on the patient’s head, neck, popliteal fossa, axilla, groin and other vascular rich places, ice bags are very soft, can be fully in contact with the body surface, easy to fix, through the conductive effect of absorbing body heat. Through the role of conduction to absorb body heat, but cold compresses need to pay attention to the time to prevent frostbite; 3, enema cooling method: for patients with fever and constipation, infusion of low-temperature isotonic saline into the patient’s body, so as to achieve the purpose of reducing fever, heat stroke patients can be used 4 ℃ isotonic saline enema to reduce fever. In addition, when the patient has a fever, attention should be paid to replenish water and keep warm. If the patient’s fever does not subside after various measures, it is necessary to take the patient to the hospital for consultation in a timely manner to avoid delaying the condition.