In the clinical human fever reaches 38.5 ℃, consider giving the treatment of antipyretic drugs, if only a low fever is not to give oral antipyretic drugs. Clinically, if you still have a low fever after taking antipyretics, consider the following reasons: 1. viral infection. Viral infections, especially because of viral infections caused by the cold is always repeated fever, about 3-5 days, this is a self-limiting disease, through rest or with some antipyretic drugs is able to relieve, although may be repeatedly low fever, but eventually the symptoms will be good relief. 2, for the purpose of taking antipyretic drugs, in addition to lowering the body temperature, is to improve the discomfort caused by fever, pay more attention to rest, more The purpose of taking antipyretic drugs is to improve the discomfort caused by the fever, pay more attention to rest, drink warm water, as well as do not exert yourself, do not smoke, drink alcohol, can also get good relief. Therefore, through the above analysis, take antipyretic drugs still low fever, do not worry too much, actively carry out treatment, under the guidance of the physician medication and their own adjustment, soon be able to get a relief.