Chest pain while eating is considered to be caused by reflux esophagitis, which is an inflammatory lesion of the esophageal mucosal tissues, due to the secretions of the stomach as well as the duodenum, and its contents, refluxing into the esophagus, causing irritation and damage to the esophageal mucosal tissues, resulting in esophageal erosions, esophageal ulcers, etc. The typical symptoms of reflux esophagitis are heartburn and chest pain. Typical symptoms of reflux esophagitis are heartburn and chest pain. With reflux esophagitis, the food will irritate the inflamed part of the esophagus when eating, resulting in chest pain. For reflux esophagitis, the principle of promoting gastric motility, inhibiting gastric acid secretion and mucous membrane protection is adopted in the treatment, and commonly used drugs include domperidone tablets, ranitidine, metformin, omeprazole, rabeprazole, lansoprazole, and so on. In terms of diet, you should eat small meals, do not eat food that stimulates the stomach and intestines, and do not lie down immediately after meals, which will aggravate the symptoms of reflux.