Drinking too much tea leads to gastric discomfort, which may be related to improper drinking and digestive diseases. 1. Drinking improperly: Tea contains theophylline, caffeine and other ingredients, which stimulate the gastric mucosa more strongly. If you drink too much tea or tea with too high concentration, it may bring strong stimulation to the gastrointestinal tract, inducing stomach discomfort and stomach pain. 2. Digestive system diseases: If the patient originally has chronic gastritis, gastric ulcer and other diseases, the gastrointestinal mucosa will have different degrees of damage. After drinking tea, the theophylline and caffeine in tea can further stimulate the damaged gastrointestinal mucosa, leading to abdominal pain, stomach discomfort, loss of appetite and other symptoms. Drinking too much tea leads to stomach discomfort for many other reasons, if the symptoms are serious, or continue to see no improvement, it is recommended to go to the regular hospital in a timely manner to consult, after clarifying the cause of the disease, under the guidance of the doctor for targeted treatment.