If bleeding occurs the next day after coitus, the following problems are common in clinic:1. Early stage of cervical cancer, which can lead to bleeding through sexual contact, so it is recommended to go to the hospital as soon as possible to do examination to know the site of bleeding, and at the same time, do cervical cancer screening to exclude the possibility of cervical cancer.2. Localized lesions on the cervix, such as local chronic inflammation of the cervix or localized polyps on the cervix, which can lead to bleeding due to inflammation. The tissue is relatively brittle, and the contact with it during intercourse will cause the capillaries to rupture, thus leading to the phenomenon of bleeding. It is recommended that if polyps are found, it is best to have the polyps removed in 3-7 days after menstruation, and the polyps removed must be sent for pathology tests. It is recommended that women should have gynecological examinations every year, and do cervical cancer screening at the same time.