Four-year-old baby fever 37.7 degrees runny nose for ordinary viral infections generally do not need to take medication, if the influenza virus caused by the need for oral antiviral drugs. Four-year-old baby fever 37.7 degrees, currently belongs to the low fever, generally do not need to take fever-reducing drugs, but pay attention to the monitoring of body temperature, and need to take physical methods of fever reduction, such as paste antipyretic stickers, warm water baths. Baby runny nose is often seen in viral infections, if it is ordinary viral infections, do not need special medication, but to rest, drink more water. But if it is caused by influenza virus, often need to be instructed by the doctor oral antiviral drugs, more commonly used is oseltamivir. In addition, four-year-old baby fever, parents should pay attention to observation, if repeated fever and symptoms continue to be unrelieved, you should take your baby to the hospital in a timely manner, to identify the cause, targeted treatment.