Sometimes bleeding during sexual intercourse, sometimes not, then this situation may be caused by the following reasons: first, inflammation of the vagina, when intercourse causes the mucous membrane to break, so it will lead to bleeding; second, local inflammation of the cervix can also occur, especially if there are cervical polyps will lead to bleeding during intercourse. Some polyps will come out of the surface of the cervix before menstruation, while others will shrink back to the cervical canal after menstruation, so sometimes there will be bleeding during intercourse, and sometimes there will not; thirdly, if it is the early stage of cervical cancer, it will also cause bleeding during intercourse, and submucosal fibroids, especially those with a tip, may cause bleeding after intercourse. Then it is recommended to have a timely examination, such as routine white belt test, cervical cancer screening and ultrasound examination, and then give appropriate treatment according to the specific situation.