Women’s anal swelling is not necessarily cervical cancer. Anal swelling may be caused by chronic cervicitis, pelvic effusion, uterine fibroids, ovarian cysts, or advanced cervical cancer. 1. Cervicitis, cervical hypertrophy and hyperplasia. The surface of the cervix is infected by pathogenic bacteria with purulent secretion attached, and the enlarged cervix will press the pelvic floor and cause anal distension. 2. Pelvic fluid accumulation. After ovulation, follicular fluid is discharged, and pelvic inflammatory disease leads to inflammatory exudation, resulting in pelvic effusion, which will gather in the uterorectal depression, causing anal distension. 3. Pelvic tumor, uterine fibroid, ovarian cyst, if the size is relatively large, will press the pelvic floor, causing anal distension. 4. Advanced stage of cervical cancer, advanced stage of cervical cancer will invade surrounding tissues, such as urethra and anus, causing anal distension. There are many causes of anal distension, so it is recommended to consult doctor in time.