How long it takes for a fever caused by a sore throat to heal on its own cannot be generalized and is mostly related to the specific cause of the fever that caused it. Most of the fevers caused by sore throat are due to the aggravation of upper respiratory tract infections, such as cold, acute viral pharyngitis, acute viral laryngitis, herpes pharyngitis, bacterial pharyngo-tonsillitis. In general, fever caused by sore throat if the temperature exceeds 38.5°C indicates a heavy reaction to the infection, and patients are not advised to wait for self-healing, but should visit the ear, nose and throat and be given the appropriate anti-inflammatory and antiviral treatment with the help of a physician. If the infection is caused by bacteria, the commonly used clinical drugs are cephalosporin and amoxicillin antibiotics; if it is caused by viral infection, the patient can take oral antiviral drugs. Children with body temperature over 38.5℃ can take oral antipyretic drugs such as ibuprofen and acetaminophen. If the fever is only low and the symptoms of infection are not serious, it usually heals itself in a week. In addition, patients should also note that fever is a normal immune response of the human body, and repeated use of antipyretic drugs without a clear cause is not recommended, and the cause of fever should be identified with the help of a physician and then treated symptomatically.