Fever patches generally work for about 3 hours. Fever patches are a short-acting, short-term aid to local cooling, and have no lasting effect. If the fever is high and does not subside, around 39 ℃ -40 ℃, then choose to use the fever relief patch. However, if the temperature is mild or moderate, i.e., around 38.5 ℃, try to use other physical cooling, mainly evaporative heat dissipation from the body. For example, if you do not choose to use cephalosporin antibiotics or other antibiotics, you can use alcohol to prepare a solution of water and wipe the armpits, popliteal fossa or neck and trunk of the body to assist the body to dissipate heat through evaporation. And we should drink more water to increase the body’s metabolism to improve the symptoms of fever, such as wind fever, wind chill cold and pneumonia. However, if antibiotics are used, we have to avoid alcohol, which may cause allergies. The antibiotics used can be replaced with others, such as the use of warm water can be as effective as physical cooling. But the principle that needs attention is to remember not to use too many cold methods to suppress the body fever. Because sweat out of the heat to retreat, with too much physical cooling, such as fever patches, ice packs, to assist control the body temperature, the body temperature can not be controlled, because sweat are suppressed in the body did not come out.