Throat astringency is considered to be related to physiological factors such as low water intake and dry living environment, and may also be caused by chronic pharyngitis, gastroesophageal reflux disease and dry syndrome. 1. Physiological factors: the body in the drinking water is small, living environment is too dry, etc., due to the lack of water and the emergence of astringent phenomenon of the throat. 2. Chronic pharyngitis: chronic pharyngitis is related to infections, occupations, allergic diseases, etc. Patients are prone to dry throat, sore throat, dry cough, foreign body sensation in the throat, etc., which is manifested as astringency in the throat. 3. Gastroesophageal Reflux Disease (GERD): GERD is associated with reduced esophageal clearance, impaired anti-reflux function, and reduced resistance of the esophageal mucosa. When gastric contents reflux, patients will have chest pain, cough, belching, foreign body sensation in the throat, stomach distension and other uncomfortable symptoms, and some patients may show astringency in the throat. 4. Dry Syndrome: The cause of the disease is still unclear, and it may be related to infectious factors, genetic factors, immune factors, etc. The typical symptoms of patients are dry mouth, eyes, and throat. Typical symptoms of patients include dry mouth, dry eyes, body fatigue, etc., and some patients will have astringent throat phenomenon. Throat astringency is also considered to be associated with obstructive sleep apnea hypoventilation syndrome, diabetes, etc. It is recommended that the patient seek medical examination in a timely manner in order to clarify the disease and then comply with the doctor’s instructions for treatment.