Frequent sore throat may be caused by dry air, excessive use of voice, chronic laryngitis, gastroesophageal reflux and other diseases. 1. Dry air: If you live in an environment with excessively dry air for a long period of time, it will cause long-term dryness and discomfort in the throat due to insufficient humidity, resulting in sore throat. 2. Excessive use of the voice: If you often talk and sing for a long time in your life and work, the mucous membrane of the throat will become congested and swollen due to excessive use of the voice, causing sore throat. 3. Chronic pharyngitis: tonsillitis, sinusitis, gingivitis and other factors stimulate the inflammatory response of the throat, manifested as tingling in the throat, foreign body sensation, dryness, etc., recurrent episodes, resulting in sore throat. 4. Gastroesophageal reflux: The esophageal lumen and the pharynx cause pain in the throat and difficulty in swallowing due to excessive exposure to gastric juices. Frequent sore throat should go to the hospital in time to identify the cause and targeted treatment.