Contractions with regularity and gradual increase at full term, which appear once every 5 minutes and last for more than 30 seconds and last longer and shorter with shortening of the cervical canal, are an important sign of labor, but the specific time varies from person to person and needs to be judged according to the number of births, the size of the fetus and the degree of dilatation of the uterine orifice. 1. Longer labor time: if the woman is a first-time mother, the fetus is larger and the cervical orifice is not well dilated, the labor time may be longer; 2. If you are a primigravida, with a large fetus and poor dilatation of the cervical opening, the delivery time may be prolonged, generally taking about 12 hours; 2, the delivery time is faster: if you are a woman in labor, with a better condition of the cervix, larger dilatation of the opening, complete descent of the fetal previa, and a smaller fetus, the delivery time is faster, and you may be able to deliver in about 6 hours. During the progress of labor, we should not only consider the length of time, but also focus on fetal heart monitoring, contractions, fetal head descent, presence of cephalopelvic disproportion, general condition of the mother, etc. In addition, we can also do appropriate activities to promote the progress of labor. At the same time, we should strengthen fetal heart monitoring, closely monitor the mother and child’s safety, so that abnormalities can be detected as early as possible, and if there is any abnormal situation of intrauterine distress, timely measures can be taken to deal with it, and if necessary, cesarean delivery can be performed.