Drinking a lot of water is not good for fever, especially when the temperature is over 38.5 ℃, oral ibuprofen or acetaminophen is needed to reduce the fever, and the cause of fever needs to be identified in order to solve the root cause of the fever. If it is a common viral cold, you can use Chinese medicines to clear the fever and detoxify the toxin, such as oral pediatric Chai Gui fever-reducing oral solution, Pu Di Lan oral solution and so on. If the fever is caused by acute bronchitis or acute suppurative tonsillitis, you need to take oral amoxicillin or cefixime and other antibacterial drugs to reduce inflammation. And drink more water has two functions: 1, the baby fever body circulation accelerated, skin sweating increased, through sweating the body heat out, a lot of water loss, such as not drink water in time, the body will appear water shortage. 2, drink more water can increase the amount of urine, increase the circulation of body fluids, to a certain extent, can accelerate the metabolism of the virus.