Bleeding after intercourse, sometimes called contact bleeding, is a situation that women often do not encounter, a number of people have asked me about such a situation, today to focus on the science. Bleeding after intercourse a woman of childbearing age, there will be about 6% of the incidence. The bleeding is usually found during or after sexual intercourse and has little to do with menstruation. Some cases of bleeding after intercourse are precursors to certain diseases, and it is important to be alert if they occur. Usually the causes of bleeding after intercourse may be: 1. cervical cancer: about 11% of cervical cancer patients may have bleeding after intercourse, which may also be the first symptom. 2, cervical inflammation: including gonococcus, chlamydia, anaerobic bacteria and other pathogens after infection leads to inflammation and congestion of the cervical area, resulting in easy contact bleeding performance, usually accompanied by excessive leucorrhea, yellowing performance. 3, cervical polyps: usually prolapsed from the cervical canal, polyps in contact with the performance of bleeding. This is not a diagnosis. The columnar epithelium in the cervical canal will appear on the surface of the cervix under the stimulation of estrogen, and will appear as columnar epithelial ectropion (many doctors diagnosed it as “cervical erosion” in the past), which may also lead to contact bleeding. If you have not had a pap smear for a long time, you are usually advised to have a pap smear. Some pathogens, such as chlamydia, gonococcus and BV, usually require special tests for a definitive diagnosis. Cervical polyps can usually be detected by visual examination by a doctor. Cervical tumors and inflammatory diseases require appropriate professional treatment, while polyps can be removed in an outpatient setting. If tumor, inflammation and polyps are ruled out after examination, no special treatment is needed for other conditions. Cervical columnar epithelial ectropion is a normal physiological phenomenon and does not require any treatment. Therefore, the most important thing is to clarify the cause of bleeding after sex, and after understanding the cause, treat the cause.