Most sore throats are caused by upper respiratory tract infections, and mild cases usually heal on their own within a week; those with secondary infections should be seen by the ENT department and treated with anti-infective drugs as prescribed by the doctor to avoid complications. Most sore throats are caused by acute pharyngitis, which is usually caused by viral infections and lasts for about a week. If the patient has mild symptoms and no systemic symptoms, it can heal itself in a week or so by drinking more water and taking rest. If the infection is severe and there are obvious systemic symptoms, it is recommended to visit the ENT department and select antiviral drugs and antibacterial agents for symptomatic treatment under the guidance of a physician, or apply Chinese medicine with antibacterial and antiviral effects. If the patient suffers from acute inflammation of the pharynx caused by secondary bacterial infection, especially purulent tonsillitis, it will not only fail to heal itself without treatment, but also cause serious complications, such as peri-tonsil abscess, heart disease, nephritis, rheumatic fever, etc. Patients need to visit the ENT department in time. In addition, because acute upper respiratory tract infections are contagious, patients need to be properly isolated.