Pregnant women should drink less tea during pregnancy, and it should not be too strong tea. Tea contains nutrients such as tea polyphenols, minerals, proteins and vitamins, which have the effect of anti-radiation, anti-fatigue and anti-germ. But a variety of tea, not all tea is suitable for pregnant women to drink, such as green tea, flower tea can drink, and black tea is not suitable for drinking, so pregnant women are not recommended to drink tea at will. Before the birth especially can not drink too much tea, once the insomnia caused by drinking tea, will cause the pregnant woman’s physical incompetence and obstructed labor. Pregnant women should drink less tea for the following reasons: 1, affect the health of the fetus: tea contains caffeine, pregnant women drink a lot of stronger tea, especially black tea, will cause central nervous excitement in pregnant women and lead to insomnia, rapid heartbeat and other symptoms, thereby stimulating increased fetal movement, and may even affect the development of the fetus; 2, cause anemia: tea contains tannic acid, tannic acid can be combined with iron ions into an insoluble iron tannate substances, will affect the absorption of iron. Pregnant women who drink too much strong tea have the possibility of causing anemia in pregnancy, and the fetus may also develop congenital iron deficiency anemia.