When a patient has a condition of chronic pharyngitis, it is usually not contagious. Chronic pharyngitis is a chronic inflammatory disease of the mucous membrane of the throat, as well as the local submucous membrane and lymphatic tissues, and is often caused by prolonged use of the voice, long-term smoking, drinking, eating spicy and irritating foods, and exposure to air pollution. Chronic laryngitis may also result from acute inflammation of the throat that is not relieved by good treatment. If the patient has an acute attack of chronic pharyngitis, there are bacterial, viral and other infectious disease factors, it may be contagious, often through the respiratory route or fecal-oral route of transmission, need to pay attention to take appropriate isolation measures.