A child with repeated high fever of 39℃ is considered to have a cold or pneumonia. Inflammation in the body will lead to repeated high fever and requires active anti-inflammatory and anti-infective treatment with antipyretic drugs to cure. It is recommended to take azithromycin granules with roxithromycin granules and cefprozil dry mix anti-infection treatment. It is recommended to take ibuprofen pellets, and acetaminophen suppositories can be inserted in the anus to treat the fever. You can also scrub your body with warm water to physically cool your body. If these methods still fail to reduce fever, it is recommended to go to the hospital for intravenous infusion of cephalosporins and inflammatory drugs, subcutaneous injection of Chaihu injection or glucocorticoids to reduce fever. During the period of high fever, it is important to ensure sufficient water intake and not to dress the child in too thick clothing, which can help to dissipate the heat. Keep the air circulating, open the windows regularly, drink more hot water, and eat more fruits and vegetables to replenish vitamins, which are helpful for the recovery of the disease.