Women should not have intercourse on the last day of their period when there is brown discharge, as this may lead to re-bleeding or infection. Women’s menstrual period is usually regular, usually in the first day of the amount of small, the second, third and fourth days of the amount of increase, to 5, 6, 7 days of menstrual flow gradually reduced, the situation of brown discharge. Brown discharge on the last day of menstruation indicates that the vaginal bleeding has not completely cleared, and coitus is not recommended. If you have intercourse when your period is not yet completely over, it may lead to increased vaginal bleeding or prolonged menstrual period, as well as pelvic inflammatory disease (PID), endometriosis and other diseases. It is recommended that women should pay attention to rest during menstruation, avoid overwork or strenuous exercise, and pay attention to personal hygiene, change personal clothing, and increase nutrition.