The world of two is not recommended during menstruation if it refers to sexual behavior. Because if women have sex during menstruation, sexual excitement can cause pelvic congestion, uterine contraction, making the endometrium shedding intensified, and ultimately may cause increased menstruation, prolonged menstruation. In addition, the resistance of women during menstruation is weaker, and if they have sex at this time, pathogenic bacteria can easily go upward to cause inflammation of the female genitalia, such as vaginitis, cervicitis and so on. During menstruation, women should pay attention to perineal cleansing, avoid sexual intercourse, and maintain a light, nutritious and balanced diet. Women are advised to go to the hospital if they have any discomfort during menstruation.