Drinking tea leads to stomach discomfort may be because the substances in the tea produce stimulation of the stomach, or the existence of stomach diseases such as gastric ulcer, gastroesophageal reflux disease and other conditions. 1. Stimulation of the stomach: when drinking tea on an empty stomach, the tea water may dilute the stomach acid, tannins and polyphenols in the tea may stimulate the gastric mucosa, producing abdominal discomfort, nausea and other symptoms. 2. Gastric ulcers: these are ulcers that develop in the lining of the stomach. Drinking tea when there is a stomach ulcer, the tea will stimulate the stomach ulcer to produce pain, discomfort and other symptoms. 3. Gastroesophageal Reflux Disease (GERD): It is a disease in which the stomach contents reflux into the esophagus and cause discomfort. Drinking tea may induce GERD, causing the stomach contents to reflux and irritate the esophagus and cause discomfort. Drinking tea upset stomach, should be timely to the hospital to rule out organic diseases, usually also pay attention to try not to drink tea, to avoid discomfort symptoms.