I believe that many friends have this experience: a certain period of time suddenly emerged from the mouth a stream of acid, spicy to the throat, chest after uncomfortable, such experiences are frequent episodes, the whole patient are afraid to eat more, afraid to eat and acid, a long time, run out to ask the doctor: doctor, I have a lot of stomach acid, always emerge, what is going on? The above two symptoms, known in clinical terms as “acid reflux” and “heartburn”, are typical manifestations of reflux esophagitis, which is associated with food containing stomach acid and bile returning upward to the esophagus, throat and even the mouth, corroding the mucosa of the above lumen and causing burning-like discomfort. Under normal circumstances, the cardia at the junction of the stomach and esophagus is closed, and the lower esophageal sphincter (LES) forms a similar door to prevent food from returning upward, so stomach acid and the food we eat can only be discharged downward from the stomach to the duodenum. When the acid flows back into the esophagus with food, everywhere it goes, the “acid” is poured out, and the esophagus will have a “foreign body sensation” in the lighter cases, and “burning pain” in the heavier ones. Generally speaking, with acid reflux and heartburn symptoms, we can diagnose “reflux esophagitis”, of course, if you are not sure, or do a gastroscopy to clarify, in the gastroscope to see the esophagus has a longitudinal rotten defect surface, all because of the stomach acid trouble. However, gastroscopy does not reveal damage to the esophageal mucosa in nearly half of the patients with reflux esophagitis, because the acid comes in a hurry but does not leave a physical “wound”, but as long as there are heartburn symptoms, we also consider it as acid reflux. Since acid reflux corrodes the esophageal mucosa and is a key link in causing reflux esophagitis, we treat this key link with acid suppression, using omeprazole (proton pump inhibitor) or ranitidine (HR2 inhibition) to reduce gastric acid secretion; secondly, anti-reflux and gastric motility to reduce the return of gastric contents upwards, often using drugs such as mosapride or domperidone. There are many triggers for acid reflux, such as eating too much, eating too much spicy, greasy and fried food, drinking alcohol; behavior: strenuous exercise immediately after a meal, sleep after eating; emotions: tension, anxiety, overwork, all these factors may trigger reflux esophagitis, it is recommended to avoid the above-mentioned behavior. Recommended: light, less oil, no alcohol, seven percent full; walk after meals, think outside the box, do not eat 3 hours before bedtime.