Reflux esophagitis is the reflux of stomach and duodenal contents, secretions and bile into the esophagus, causing irritation to the esophagus and causing mucosal erosion or ulcerative inflammation in the esophagus, and when a person sleeps in a recumbent position, this position is more prone to reflux, and food residues in the stomach and duodenum as well as gastric acid secreted by the stomach will reflux together into the esophagus, and in the morning there will be a sour feeling in the mouth. For reflux esophagitis, the treatment is generally taken to promote gastrointestinal dynamics and inhibit the secretion of gastric acid drugs to protect the gastric mucosa, commonly used drugs such as morpholine, metformin, ranitidine, omeprazole, etc. Specific drugs need to be taken after examination at the hospital, according to their condition under the guidance of physicians.