Drinking green tea leads to gastric discomfort may be caused by green tea stimulation of gastric mucosa, gastric diseases, etc., which can be remedied through life management and medication such as omeprazole and bismuth potassium citrate. 1. Green tea stimulates the gastric mucosa: the tea polyphenols in green tea may stimulate the gastric mucosa, acid reflux, heartburn, nausea, vomiting and other symptoms of gastric discomfort. You can drink more hot water to promote the metabolism of green tea, but also to take less spicy stimulation, cold, greasy food, avoid smoking and alcohol. Most of them can be restored to normal through life conditioning. 2. Gastric diseases: gastritis, gastric ulcer, gastric cancer and other gastric diseases due to gastric mucosa congestion, edema and other morphological changes in the consumption of green tea and other beverages that stimulate the gastric mucosa, may aggravate the damage to the gastric mucosa symptoms of gastric discomfort. Omeprazole, ranitidine and other medicines to inhibit gastric acid secretion and bismuth potassium citrate and other medicines to protect gastric mucosa can be taken; if it is caused by gastric cancer, it is necessary to carry out gastrectomy or total gastrectomy. If there are symptoms of stomach discomfort after drinking green tea, it is not recommended to take medication on your own, it is recommended to go to the hospital to check gastroscopy, Helicobacter pylori breath test and other items under the guidance of the doctor’s treatment.