Drinking too much tea may have aggravate the burden on the gastrointestinal tract, excessive excitement and other bad things. For the normal population, tea itself has a certain nutritional value, there is no harm to the body, daily control of the amount of drinking can be. 1. Increase the burden on the gastrointestinal tract: Tea contains tannin and other substances, if the tea drink too much may stimulate the mucous membrane of the stomach, especially for the people who are suffering from gastrointestinal disorders, more likely to cause stomach pain, abdominal pain, diarrhea and other gastrointestinal discomfort. 2. Excessive excitement: tea contains substances that have an excitatory effect on the nerves, such as caffeine, etc. Drinking too much tea may cause the brain to become overly excited, and if you drink a lot of tea before going to bed, it may affect the quality of sleep. Healthy people drink tea in moderation is not harmful, but should avoid drinking a lot of strong tea for a long time. After drinking tea, if you have discomfort, it is recommended to consult a doctor in time to avoid delays.