People with a bad stomach try to avoid drinking tea, most of the tea contains a tea polyphenol substances, this substance has an irritating effect on the gastric mucosa, people with a bad stomach in the tea will lead to aggravation of stomach pain symptoms. Tea polyphenols into the stomach will stimulate excessive secretion of gastric acid, gastric acid secretion will be too much on the gastric mucosa caused by violation, aggravate gastritis, gastric ulcer and other diseases. In addition to black tea and Pu’er tea, most of the tea is cold. People with a bad stomach usually try to eat food that has the effect of warming the stomach, the intake of cold food will affect the function of the spleen and stomach, and even aggravate gastric diseases. Many people with a bad stomach need to use drugs for treatment, and tea and many drug components will have a chemical reaction, resulting in the effect of the drug is affected. Especially if you drink strong tea or drink tea on an empty stomach, it will cause greater stimulation of the gastric mucosa and aggravate stomach problems.