It is common to have sore legs when you have a fever because the body temperature rises during fever, which causes the body’s metabolic rate to increase, and in order to meet the body’s energy needs, a lot of anaerobic glycolysis tends to occur, causing lactic acid to accumulate, so it can lead to muscle soreness and leg soreness. In addition to leg soreness, it is often accompanied by soreness in the arms or other muscles. The use of antipyretic drugs is often more effective. It is recommended to use non-steroidal anti-inflammatory drugs to reduce fever and relieve pain, such as ibuprofen suspension, acetaminophen granules or acetaminophen suspension, which are more effective in reducing fever. In addition, if the symptoms of fever are not particularly strong and the leg pain is not very serious, physical cooling can be used to reduce fever, such as the use of diluted white wine or alcohol to rub the skin of the whole body, the effect is relatively good.