The approximate length of time it takes to give birth after the water is artificially broken is uncertain and can range from a few hours to tens of hours. Artificially breaking the amniotic fluid refers to the artificial rupture of membranes in obstetrics. The purpose of artificial rupture of membranes is mainly two, namely to strengthen the contraction to promote the progress of labor and to observe the character of amniotic fluid, which is commonly used in pregnant women with prolonged labor who have weak coordinated uterine contractions, uterine opening ≥ 3cm, and no cephalopelvic disproportion. In addition, the intrauterine condition of the fetus can be assessed to some extent by the traits of amniotic fluid. In some cases, uterine contractions are induced reflexively after rupture of membranes due to stimulation of the fetal head, thus accelerating the progress of labor and delivering the baby within a few hours or tens of hours. However, in some cases, after rupture of membranes and the addition of oxytocin, abnormal fetal heartbeat, cephalopelvic disproportion, or stagnation of labor may occur, and vaginal delivery is often not possible. The doctor will decide on the treatment to be given at the time of delivery depending on the progress of the labor, so it is important to follow the doctor’s instructions for delivery.