The cause of bleeding after intercourse in women may be a manifestation of menstruation-related, inflammation or gynecological tumors. 1. Menstruation-related: vaginal bleeding after intercourse just after menstruation or close to menstruation may be the residue of menstrual blood, or it may be a sign that menstruation is approaching. This is usually a normal phenomenon, and there is no need to worry too much. 2. Inflammation: when a woman suffers from vaginitis or cervicitis, the stimulation of sexual activity during coitus may cause the vaginal mucosa and cervix to bleed due to irritation. 3. Gynecological tumors: If you suffer from submucous fibroids, endometrial polyps or even cervical cancer, you may experience vaginal bleeding after intercourse due to friction and stimulation during sex. In addition, if the action is rough during sex, it can also cause damage to the vaginal mucosa, which can lead to women bleeding after intercourse. If a woman experiences frequent bleeding after intercourse, it is recommended that she go to the hospital as soon as possible for a checkup, and then treat the symptoms according to the cause.