Drinking tea during menstruation does not have much benefit, and it is generally not recommended to drink tea water during menstruation. But for ordinary flower tea, strictly speaking does not belong to the tea this kind, is allowed to drink, no significant effect. The adverse effects of drinking tea during menstruation mainly include affecting the absorption of iron ions and stimulating the uterus. Because women during menstruation there is a lot of bleeding, the body iron ion loss is more serious, and the tannins in the tea as well as the theophylline in the digestive tract, it is possible to combine with the iron ions in the food, the formation of human body can not be absorbed sediment, affecting the absorption of iron ions, aggravate the symptoms of anemia. Tea contains a certain amount of caffeine, which can cause a certain degree of excitement to the nervous system, and the emotional instability of women during menstruation itself may aggravate the symptoms of such emotional instability, so it is not recommended to drink tea during menstruation.