A backward cervix has little effect on labor. The cervix undergoes two changes after labor, the disappearance of the cervical canal and the dilatation of the uterine orifice. When the uterine orifice is fully opened, the soft birth canal conditions required for a normal delivery are achieved. The factors that determine labor are the force of labor, the birth canal, the fetus and psychosocial factors. As long as these factors are normal and adapt to each other, the fetus can be delivered smoothly and naturally through the vagina. As labor progresses, the cervical opening backward may change. Regular contractions after labor will pull the uterine muscle fibers and surrounding ligaments at the endocervical opening, while the fetal prenatal dew support makes the anterior amniotic sac protruding into the cervical canal, which will pull the muscle fibers of the endocervical opening upward, so that the cervix will lean forward, and then the vaginal delivery will proceed smoothly. Near the expected date of labor, you need to go to the hospital for a comprehensive examination, such as checking the size of the biparietal diameter of the fetus, the position of the fetal head, whether the cephalopelvic symmetry, the strength of the uterine contractions, the uterine contractions regularity, and the situation of the birth canal, and so on. If these tests are basically normal, labor can usually be normal, and the position of the cervical opening has little to do with it. If there are cases of fetal biparietal diameter too large, fetal position, cephalopelvic asymmetry, etc., it may not be suitable for normal delivery, and it is recommended to communicate with the doctor and consider cesarean section.