A sore throat followed by a cold needs to be considered as having an acute attack of chronic pharyngitis, which results in a series of symptoms. The patient himself has chronic pharyngitis, the mucous membrane of the throat belongs to the chronic inflammatory changes, such as mild edema, in remission without any clinical symptoms, such as cold air inhalation, cold, rain, staying up late, fatigue or eating spicy and stimulating food so that the immunity is reduced, the infection of viruses, bacteria and other pathogens will induce the acute attack of chronic pharyngitis, the mucous membrane of the throat is congested, edema and The chronic inflammatory changes of mucous membrane congestion, edema and exudation of inflammatory secretions in the throat will be more obvious, and the more typical cold symptoms, such as nasal congestion, runny nose, sneezing, coughing and coughing, will appear at this time.