Chronic congestion of the mucous membrane and hyperplasia of the lymphatic tissue at the base of the tongue are usually considered to be caused by chronic pharyngitis or gastroesophageal reflux. 1. Chronic pharyngitis: on the one hand, the body’s normal response to inflammation causes an increase in lymphoid tissue in the pharynx; on the other hand, pharyngeal discomfort can also cause a foreign body sensation, resulting in chronic congestion of the mucosa. 2. Gastroesophageal reflux: gastroesophageal reflux caused by the consumption of irritating foods, stimulate the mucous membrane of the pharynx, which in turn causes chronic congestion of the mucous membrane and lymphatic tissue hyperplasia of the root of the tongue or exacerbate the situation of pharyngitis. In short, if there is usually no dry throat, itchy throat and other symptoms, you can first temporarily observe the salt water gargle to deal with, if the foreign body sensation is serious, at the same time combined with other symptoms of the pharynx should be timely medical treatment, active treatment.