1, burning sensation behind the sternum: burning sensation behind the sternum, also known as reflux heartburn, is the main symptom of the disease, mostly occurs about 1 hour after eating, often related to posture, such as bending, flexion, cough, pregnancy, ascites, forceful defecation and other postures forced to increase the pressure in the stomach can trigger aggravated heartburn, also known as postural heartburn. It can also be triggered by over-eating, intake of strong tea, wine, coffee, juice, aspirin drugs. If the condition is complicated by a hiatal hernia, the above symptoms are more typical and may be accompanied by gastric distention, hiccups, belching, and burning sensation in the oral mucosa, etc. The symptoms may disappear temporarily after taking acid-control drugs, but the condition may be aggravated by eating overly hot or acidic stimulating food. If the effect is not obvious after taking acid-producing drugs, suggesting a lack of stomach acid, the burning sensation is mainly due to bile reflux. In severe esophagitis with scar formation, the burning sensation may be absent or only mild. Therefore, the clinical manifestation is a burning-like sensation behind the sternum (or under the sternum). The pain is similar to angina pectoris or pleurisy radiating to the back, chest, or even behind the ear, and in severe cases it is a sharp stabbing pain. If a patient with reflux esophagitis presents with persistent retrosternal pain, even radiating to the neck, it suggests a possible penetrating ulcer or associated peresophagitis. When trapped food and refluxed secretions are inhaled into the trachea and lungs, serious consequences such as nocturnal paroxysms of choking, wheezing, or even asphyxiation may occur. 3, reflux to the pharynx: Patients feel that every after a meal, in the anterior or recumbent position, there is acidic liquid food into the stomach, esophageal reflux to the mouth, pharynx, and mostly in the subpectoral burning or occurring before the appearance. Most of the gastric contents reflux to the pharynx, and the occurrence of reflux chronic pharyngitis. 4, swallowing unfavorable or vomiting: these two interact with each other, swallowing difficulties, food down unfavorable, then up and vomiting. In the early stage of the disease process, due to inflammation causing restrictive spasm of the esophagus, a momentary unfavorable swallowing, dysphagia and vomiting can occur. As the disease progresses, persistent dysphagia and vomiting may occur in the later stages due to stenosis caused by fibrous scarring. When dysphagia gradually worsens, its heartburn gradually decreases in frequency and degree, and even heartburn no longer appears in the later stages. 5. Rare special types of esophagitis: When septic esophagitis is seen clinically, it often manifests as retrosternal, neck pain, or difficulty and pain in swallowing. If the lesion is extensive, fever, chills and peripheral discomfort may occur. Candida esophagitis can also be seen clinically. This type of symptom is mildly associated with dysphagia and mild painful swallowing, while severe cases may present with severe retrosternal pain, even food aversion, weight loss, anorexia, vomiting or even bleeding.