Pharyngitis patients with phlegm in the throat, mostly due to inflammatory hyperplasia of the pharyngeal mucosa and submucosal tissues, due to hypersecretion of mucous glands as well as pharyngeal submucosal capillary dilation and increased permeability. Chronic pharyngitis with pharyngeal mucosa, submucosal and lymphatic tissue inflammation, such as chronic simple pharyngitis, due to pharyngeal mucosal congestion, submucosal connective tissue and lymphatic tissue hyperplasia, subepithelial vascular dilatation, increased vascular permeability resulting in increased exudate, and mucus glands hypertrophy, often hypersecretion, and then there can be viscous secretion adherent to the mucous membrane of the posterior pharyngeal wall. Chronic hypertrophic pharyngitis with mucosal congestion and thickening, the posterior wall of the pharynx lymphoid follicle hyperplasia, visible multiple granular elevations, easy to sputum adhesion, not conducive to coughing. Pharyngitis throat phlegm, there may be post-nasal drip syndrome, reflux pharyngitis, etc., pharyngitis patients, should actively go to the hospital, clear cause and degree of symptoms after standardized treatment.