Menstruating couples are prone to induce female bacterial vaginosis, endometritis, endometriosis, etc., may also occur menstrual disorders, dysmenorrhea. Menstruating couples are prone to increase the risk of bacterial vaginosis, endometritis, endometriosis and other diseases; at the same time, it is also prone to cause men to suffer from glans, urethritis and other diseases, need to pay attention. If infected with the above diseases and not treated in time, it will lead to infertility in serious cases. In addition, during the menstrual period, couples who have sex with each other may lead to menstrual disorders, which is related to changes in sex hormone levels in the female body caused by sex with each other, which can be manifested in increased or decreased menstrual flow, prolonged or shortened menstrual period; there are also some women who have sex with each other during the period of menstrual cramps, which will reduce the quality of their lives and pose a certain risk to health. It is recommended that couples avoid coitus during menstruation, and have coitus after women’s menstruation is completely over.