If it is the first time a woman bleeds during intercourse, consider the possibility of a broken hymen. In general, the amount of bleeding from a ruptured hymen is very small and does not require special treatment, but it is necessary to pay attention to the cleanliness and hygiene of the vulva. If you have rough sex, the mucous membrane of the vaginal wall may be damaged, in which case you may also bleed during intercourse. It can also be caused by cervical polyps, which need to be removed and sent for pathological examination after surgery. It can also be caused by precancerous lesions of the cervix or cervical cancer, which can be treated by cervical conization surgery or radical cervical cancer surgery if necessary.