The phenomenon of pain and bleeding in the belly during intercourse may be clinically caused by the following reasons: first, inflammation of the pelvis, which can aggravate the state of pelvic congestion during intercourse, and therefore cause pain in the lower abdomen. Due to the inflammation, the pelvic tissues are relatively brittle, so the phenomenon of bleeding during intercourse occurs. The corresponding diagnosis can basically be made through gynecological examination and then treatment is given. Second, whether it is due to the intrauterine birth control ring, if there is a birth control ring, the birth control ring appears ectopic situation, will also lead to bleeding, and will appear lower abdominal pain, by doing the examination can be diagnosed, to promptly remove the birth control ring. Third, to rule out the possibility of localized cervical lesions, screening for cervical cancer can be done.