Chronic pharyngitis is a common disease in otolaryngology, with a long course and symptoms that tend to recur, often leaving the impression that it is not easy to cure. Common causes are as follows: 1. Recurrent episodes of acute pharyngitis. 2, chronic inflammatory stimulation of the upper whistle tract. Such as nasal sinus inflammation, nasopharyngeal inflammation or nasal septal deviation, inflammatory secretions flowing through the posterior nostril to the back wall of the pharynx to stimulate the mucosa, but also because the patient long-term open mouth whistling such as OSAHS (sleep apnea hypoventilation syndrome), causing excessive dryness of the mucosa leading to chronic pharyngitis; chronic tonsillitis can also cause chronic pharyngitis. 3, long-term smoking and alcohol consumption, dust, harmful gas stimulation and like to eat irritating food can cause chronic pharyngitis. 4, occupational factors such as teachers and singing actors, salesmen and physical factors can cause. 5, systemic factors: some systemic diseases such as anemia, indigestion, chronic bronchitis, bronchial asthma, rheumatism, liver and kidney disease; endocrine disorders, phytodystrophy, vitamin deficiency and immune dysfunction are related to atrophic pharyngitis.