It is best for women not to drink black tea during their menstruation. Women drinking black tea will affect the absorption of iron, calcium and other substances, and may also cause women to have neurological symptoms, insomnia, poor rest, fatigue and weakness. Women should not drink tea and other stimulating drinks during menstruation, pay proper attention to rest, eat more blood and nutritious food, pay attention to avoid staying up late and getting cold, keep your mood relaxed, move appropriately and exercise to facilitate the smooth discharge of menstrual blood and help your body recover, pay attention to keeping the vulva clean and hygienic during menstruation to avoid local infections. As women’s ovarian secretion hormone level decreases during menstruation, they are prone to fatigue and weakness, loss of appetite, and drinking black tea will aggravate the unfavorable stimulation reaction.