Cervical cancer is a malignant tumor that develops near the cervical opening at the lower end of the cervix and is the result of persistent high-risk human papillomavirus (HPV) infection. The International Federation of Gynecology and Obstetrics (FIGO) staging is used for cervical cancer. Staging is the basis for developing a treatment plan and is divided into 4 stages, from mild to severe. Stage Ι Cancer tissue has broken through the basement membrane and infiltrated into deeper tissues, but is still confined within the cervix. Stage Ⅱ Cancer tissue has gone beyond the cervix and invaded the uterus upward; invaded the parietal uterus on both sides, but has not reached the pelvic wall; and invaded the vagina downward, but has not involved the lower 1/3 of the vagina. Stage Ⅲ Cancer tissue has invaded the parietal uterus and reached the pelvic wall; or invaded the lower 1/3 of the vagina downward. Stage Ⅳ Cancer tissue has invaded the rectum or the bladder, or has spread to the vulva, or infiltrated the pelvic cavity widely, or there is extensive metastasis.