Menstruation period is generally not pregnant, because in the menstrual period of intercourse relative to ovulation has passed, the chances of pregnancy is very low, but women in the menstrual period prohibited coitus, because in this period of coitus will cause menstrual blood reflux, will cause gynecological diseases, will cause endometriosis, adenomyosis, will cause menstrual cramps or even cause gynecological inflammation, resulting in inflammation of upward infection, and so on. So women in the menstrual period to prohibit coitus, in the menstrual period should also pay attention to prohibit eating cold, spicy and stimulating food, keep the vulva clean and hygienic, change the sanitary pads, pay attention to warmth, appropriate exercise, enhance the body resistance, can eat more nutritious food, in the menstrual period, but also to maintain a happy mood.