Pharyngitis is a condition in which the mucous membrane and submucous tissue of the pharynx are extensively and diffusely congested and edematous, and lymphoid follicles are proliferating, usually manifesting as a dry throat, sore throat, foreign body sensation in the throat, and increased secretions. It is caused by the following factors: first, acid reflux caused by prolonged consumption of spicy and irritating food, reflux esophagitis leading to an increase in acid water and acid gas, which stimulates the mucous membrane of the throat and causes an increase in phlegm. Second, diffuse congestion and edema caused by chronic and repeated tonsillitis, as well as other chronic inflammation of the throat. As long as the cause is found, the diagnosis and treatment can be clarified. The treatment requires a light diet, exercise after meals, less spicy and stimulating food, oral acid suppressants and gastric power drugs, including Loxacril and morpholine. At the same time, exercise, eat more vegetables and fruits, avoid colds and tonsils inflammation, in order to be completely cured.