A four-year-old child with a fever of 39 degrees can take oral antipyretic and analgesic drugs such as ibuprofen suspension or acetaminophen suspension, which can play a fast role in reducing fever. When you have a fever, you need to drink more water, pay attention to rest, take vitamin C supplements, try to avoid going to places with a lot of people to prevent cross-infection, and be alert to dehydration and convulsions caused by high fever. You can take oral Chinese medicines, such as Pudilan Anti-inflammatory Oral Liquid, Blue Scutellaria Oral Liquid, Shuanghuanglian Oral Liquid, Lianhua Qingfei Granules, Antelope Horns Granules and other fever-clearing and detoxifying drugs. Children with fever caused by cold can take pediatric aminophenol xanthamine granules orally, which can treat and relieve various symptoms caused by cold, such as fever, headache, nasal congestion, runny nose, sneezing, muscle aches, sore throat and other symptoms. Fevers caused by wind-cold colds can be treated by Chinese herbal tonics. For fevers caused by wind-cold colds, you can use Jing Fang Da Table Tang with addition and subtraction, which has the effect of pungent warming and relieving the symptoms; for fevers caused by wind-heat colds, you can use Yin Qiao San with addition and subtraction, which has the effect of pungent cooling and relieving the symptoms. When children have fever, they can be treated by a combination of Chinese and Western treatments, which can shorten the cycle and improve efficiency.