Contact bleeding is usually detected during sexual intercourse, vaginal endoscopy, and the blood that comes out is different from the normal menstruation that women discharge periodically, and is usually caused by diseases such as cervical columnar epithelial ectopia, cervical polyps, acromegaly, etc. Therefore, once contact bleeding occurs, all gynaecological examinations, cervical cancer screening and colposcopy should be improved as soon as possible to rule out the possibility of cancer.