Reflux refers to acid reflux, which is considered to be related to gastric dysfunction, gastroesophageal reflux, chronic gastritis and gastric ulcer. 1. Gastric dysfunction: If patients with gastric dysfunction don’t pay attention to their diets, the intake of chocolate and high-fat foods will irritate the stomach, leading to abnormal peristaltic movements, which may cause food reflux. 2. Gastroesophageal reflux: Gastroesophageal reflux, also called gastroesophageal reflux disease (GERD), is considered to be related to abnormal esophageal motility, decreased resistance of the esophageal mucosa, and decreased pressure of the lower esophageal sphincter. Typical symptoms of patients are heartburn, reflux, epigastric pain, burning sensation and so on. 3. Gastritis, ulcer: patients with chronic gastritis, gastric ulcer, gastric digestion is weakened, the food matrix on the stomach wall caused by stimulation, easy to appear nausea, regurgitation, esophageal reflux disease symptoms. The symptoms of nausea and regurgitation, it is recommended to go to the hospital for relevant examinations to find out whether it is related to chronic gastric diseases, Helicobacter pylori infection, pregnancy and other factors. Combined with the doctor’s advice, targeted regulation.