Drinking tea diarrhea, may be related to allergic factors, may also be due to the selection of tea and season does not match or drink overnight tea and other reasons. 1. Allergic factors: tea contains caffeine, tea polyphenols and other ingredients, some people may be allergic to some of the ingredients in the tea, it is easy to drink tea after the phenomenon of diarrhea, especially itself belongs to the allergic body of people, more likely to drink tea after diarrhea. 2. Selection of tea and the season does not match: the choice of tea usually need to choose according to the season, in winter it is recommended to drink pu-erh tea, black tea, black tea, etc., if you drink green tea in winter, it is easy to drink tea diarrhea, mainly due to the nature of the green tea cold caused by. 3. Overnight tea: the day of the brewed tea should be finished the day, the brewed tea placed overnight easy to breed bacteria, so after drinking overnight tea, it is easy to diarrhea phenomenon. Drinking tea diarrhea, you should stop drinking tea in time, if the symptoms are more serious, you should go to the regular hospital as soon as possible, after a clear causative factor, by the doctor’s guidance on symptomatic treatment.