The depth of the cervix generally refers to the distance from the vaginal opening to the external cervical opening, and their own development is congenital, there are some individual differences, when the cervix is too shallow may also be related to uterine prolapse, remove the pathological state does not exist which is better. Usually, the depth of the cervix refers to the distance from the vaginal opening to the external cervical opening, normal adult women vaginal wall length of 7 ~ 9cm, the back wall length of 10 ~ 12cm, the cervical canal length of 2.5 ~ 3.0cm, and by the height and weight and other factors, the depth of the cervix will be different. The cervix is usually formed by its own congenital development, and a shallow cervix may be due to uterine prolapse or developmental abnormalities, and there is no such thing as a better cervix except for abnormalities. Therefore, it is recommended that if there is any abnormality in the position of the cervix, you can go to the hospital in time for a detailed physical examination and make a judgment based on the results and the doctor’s instructions, so as to facilitate the timely detection of the disease and intervention and treatment.