Always clearing the throat may be caused by chronic pharyngitis, postnasal drip syndrome, reflux pharyngitis and other diseases. 1. Chronic pharyngitis: If acute pharyngitis recurs, it is easy to induce chronic pharyngitis; long-term in a dusty environment, excessive smoking and alcohol and other reasons are also easy to induce chronic pharyngitis, resulting in patients always clearing their throats, and there may also be a sense of foreign body in the throat and other symptoms. 2. Post-nasal drip syndrome: rhinitis, nasal polyps and other diseases are common causes of post-nasal drip syndrome, the patient’s nasal secretions increase, may flow to the throat, resulting in the patient’s throat has a foreign body sensation, always clear throat. 3. Gastroesophageal reflux: Impaired anti-reflux structures and reduced esophageal clearance are common causes of reflux pharyngitis. When gastric contents reflux, it may cause irritation to the throat, leading to throat clearing, coughing, nausea and other symptoms. It is recommended that patients who always clear their throats go to the hospital for a checkup to determine the cause of the condition.