A baby with fever and oral herpes is usually caused by a viral infection and can be treated with antiviral medication. For example, interferon, busulfan anti-inflammatory oral solution, etc.. If the child’s oral herpes is more serious, you also need to use light salt water for the child’s mouth rinse treatment, to promote the recovery of oral herpes is good, with a certain sterilization effect. If the child’s fever is high and exceeds 38.5 degrees, the child should be given antipyretic and analgesic drugs to reduce the fever, such as ibuprofen suspension or acetaminophen pellets to reduce the fever. If your child’s temperature is below 38.5 degrees, you can use physical cooling methods, such as putting fever patches on your child’s forehead, neck, back, palms and feet, which are very effective in reducing low fever.