Reflux esophagitis is a series of manifestations due to the reflux of gastric acid. In addition to the symptoms of the esophagus itself, there will also be symptoms of other systems other than the esophagus, such as pharyngitis. Gastric acid reflux in the esophagus through the upper esophageal sphincter can reach the pharynx, gastric acid is a chemical substance that can corrode the pharynx and pharyngitis occurs, so the patient always feels that there is a sense of foreign body in the pharynx, swallowing is not smooth, and even hoarse pharyngeal hoarseness, hoarse articulation, voice changes and other uncomfortable sensations, and even some patients will be diagnosed with the Department of Pentacenteric Surgery and there is no obvious organic lesions. If the patient presents with pharyngitis in combination with reflux, heartburn or retrosternal pain, it is important to consider that it may be due to extra-esophageal manifestations caused by reflux esophagitis. There may also be respiratory disorders, such as chronic cough, phlegm, asthma, etc., which are associated with reflux esophagitis.