There are many reasons for the congestion of the mucous membrane of the glottis and pharynx, such as improper diet, tonsillitis, pharyngitis and so on. 1. Improper diet: eating spicy and irritating food for a long time can lead to stimulation of the mucous membrane of the tongue and pharynx, thus causing congestion of the mucous membrane of the tongue and pharynx, accompanied by swelling and pain. 2. Tonsillitis: acute inflammation of palatine tonsillitis can show congestion of the mucous membrane of the tongue and pharynx, enlarged tonsils, and can also cause pain in swallowing, foreign body sensation in the throat and other symptoms. 3. Pharyngitis: pharyngitis due to inflammation irritation inflammation of the mucous membrane of the tongue and pharynx, which will cause congestion of the mucous membrane of the tongue and pharynx, accompanied by itchy, dry throat, foreign body sensation and other phenomena. There are many reasons for the congestion of the mucous membrane of the tongue and throat, and it is recommended to go to the hospital in time to improve the examination after the symptoms appear, and take standardized treatment according to the doctor’s instructions, so as to avoid delaying the condition.