The acidic component of the stomach is bile or gastric acid, usually because of the following reasons: First, alcohol has a strong stimulating effect on the gastric mucosa, if you drink too much alcohol will lead to gastric mucosal damage, gastric discomfort, manifested as acid reflux, nausea, vomiting, etc., this situation must be strictly abstinence from alcohol, and under the guidance of the doctor to take medication. Second, bile reflux gastritis, refers to the bile and pancreatic fluid for various reasons, from the duodenum back into the stomach, so that the gastric mucosa inflammation, edema, bleeding, patients will have acid reflux, vomiting symptoms, but also have a burning sensation in the stomach. Third, chronic gastritis, refers to the chronic inflammation of the surface of the gastric mucosa, when the gastrointestinal distension, gastric contents followed by upward reversal, will also appear belching, acid reflux, abdominal distension, vomiting symptoms of acid.