Thick cervix is not necessarily slow in labor, although this kind of mothers in regular contractions for a longer period of time before the cervix can be shortened, softened, thinned, which may lead to prolongation of the first stage of labor, but the thickness of the cervix does not play a decisive role in the length of the process of labor, the length of the process of labor is also by the cervical ripeness of the cervix, the conditions of the mother’s pelvis, the size of the fetus, the fetal position, and many other factors to determine the length of the process of labor. 1, Cervical ripeness: Clinical common use of Bishop score Bishop’s score is commonly used in clinical practice to assess cervical ripeness and determine the success rate of vaginal labor. In addition to the thickness of the cervix, the degree of opening of the uterine mouth, the position of the prenatal exposure, the hardness of the cervix, and the position of the uterine orifice can all affect the speed of labor, and in the case of a thicker cervix, if the position of the prenatal exposure is lower, the cervix is softer, and the position of the uterine orifice is more anterior, it can accelerate the progress of the labor process. 2, the conditions of the maternal pelvis: The pelvis consists of the entrance to the pelvis, the middle pelvis, and the exit from the pelvis. If one or more of the three pelvic planes of the mother is narrow, the time of labor can be prolonged. 3, the size of the fetus: due to the limited size of the birth canal of the mother, the delivery time is shorter for the smaller fetus and longer for the larger one, and the prolongation of labor or even stagflation is more likely to occur. 4, the fetal position: usually, it is easy to give birth in occipital anterior position, and the delivery time is longer when there is occipital transverse and occipital posterior position, and the labor process is longer in serious cases. In severe cases, the mother may have persistent occipital transverse position or occipital posterior position, which requires timely cesarean section to terminate the pregnancy. Women with a thick cervix can exercise moderately before labor, such as getting out of bed or bouncing safely on a yoga ball, in order to promote the descent of the fetal head, cervical dilatation, and the progress of labor.