Mute voice in the elderly may be caused by physiological factors, inflammatory infections, reflux pharyngitis and other factors. 1. Physiological factors: along with people’s age, the texture of the vocal cords of the elderly aging, reduced elasticity, there may be a mute voice, which is a normal physiological phenomenon, without special intervention. 2. Pharyngolaryngitis: the elderly airway resistance is low, often with chronic respiratory diseases, can occur frequently, recurrent coughing, coughing up sputum symptoms, accompanied or not accompanied by infection, there may be inflammation spreading to the vocal folds and triggered by its redness and swelling, resulting in hoarseness. 3. reflux pharyngitis: the elderly esophageal sphincter function degeneration, after eating and drinking and at night there can be gastric reflux to the pharynx, may lead to hoarseness, may be accompanied by pharyngeal pain, can lead to swallowing disorders as well as serious speech slurred. Elderly people with hoarse voice may also be caused by laryngeal cancer and other diseases, and they should go to the hospital in time for examination to clarify the specific causes and then target treatment.