Chronic pharyngitis is a diffuse chronic inflammation, the disease has a long course, the symptoms are more stubborn, and it is usually difficult to cure completely. Chronic inflammation of the mouth and nose, pharyngeal reflux, allergies, adverse factors such as stimulation and other factors can cause chronic pharyngitis, can be divided into local factors, systemic factors and external stimuli. 1. Local factors: prolonged open-mouth breathing, nasal inflammatory diseases and chronic inflammation of the nose and mouth, repeated stimulation of inflammatory secretions, or repeated episodes of acute pharyngitis may lead to chronic pharyngitis. 2. Systemic factors: such as vitamin deficiency, gastroesophageal reflux, endocrine dysfunction, chronic inflammation of the lower respiratory tract, immune deficiency, etc. may also trigger chronic pharyngitis. 3. Stimulation of adverse factors: dust, spicy food, excessive smoking and alcohol, allergens and harmful gases may also be the cause of the disease. Chronic pharyngitis may also be caused by other reasons, it is recommended that patients deal with the triggering factors in a timely manner, to develop a good dietary habits, and if the corresponding symptoms occur, it is recommended to consult a doctor in a timely manner, and follow the doctor’s instructions for treatment.