Fever reducer expired, do not apply, because after the expiration date, even if the appearance and properties have not changed, but the effect of antipyretic will be reduced. Pediatric fever if the temperature does not exceed 38.5 degrees Celsius or more, you can not take oral antipyretic drugs for treatment, pay attention to drink more water, often use warm towels to wipe the hands and feet and the body to physical cooling, full rest. If the fever is caused by colds, you can take some Chinese medicinal preparations that have the effect of clearing away heat and toxins, such as Qingkailing granules, Banlangen granules, and so on.