The causes of chronic pharyngitis are as follows: First, acute pharyngitis repeated episodes, prolonged, chronic; Second, rhinitis, sinusitis, tonsillitis, periodontitis, etc., the inflammation of the neighboring parts of the pharynx directly spread to the pharynx, or the stimulation of purulent secretion caused by pharyngitis; Third, gastro-esophageal pharyngopharyngeal reflux stimulation of the pharyngeal mucosa caused by pharyngitis; Fourth, systemic diseases such as diabetes mellitus, cirrhosis of the liver, nephritis, endocrine Systemic diseases, such as diabetes, liver cirrhosis, nephritis, endocrine disorders, etc., leading to a decline in systemic resistance, may cause pharyngitis; E. Long-term tobacco and alcohol, eating spicy and stimulating food, or dust stimulation caused by pharyngitis. The treatment of chronic pharyngitis mainly involves removing the causes of the disease, quitting smoking and drinking, avoiding the stimulation of dust and harmful gases, actively treating local diseases and systemic diseases, and improving the resistance of the body.