Throat blisters may be herpes pharyngitis, and may also be related to chronic pharyngitis and other diseases. 1. Herpetic pharyngitis: it is an acute infectious disease caused by enterovirus, which is mainly manifested as congested, yellow or grayish-white small herpes can appear in the throat; and accompanied by fever, sore throat, mouth pain, cough, drooling, vomiting, diarrhea, loss of appetite and other symptoms. 2. Chronic pharyngitis: when the mucous membrane of the throat is stimulated by inflammation for a long time, there will be mucosal congestion, submucosal lymphoid tissue and connective tissue hyperplasia, thus forming a follicle-like protrusion of the posterior wall of the pharynx. At the same time, it will also manifest as burning throat, dryness, foreign body sensation in the throat, irritating cough and other symptoms. Throat blisters, it is recommended to actively seek medical attention to clarify the specific diagnosis.