The main function of the uterotonics is to strengthen the contractions of the uterus. There are certain hazards of using uterotonin, and it must be used under the supervision of a doctor. The hazards to a woman include uterine rupture, infection of the uterine cavity, and a drop in blood pressure. 1. Uterine rupture: If the dose or speed of the use of uterotonin is too large or too fast or the woman’s body is sensitive, it may lead to uncoordinated contraction of the uterus, which is prone to myometrial fissure and may cause uterine rupture. 2. Infection of the uterine cavity: if the use of uterotonin to induce labor, there may be part of the tissue left in the uterus, which may easily cause infection of the uterine cavity. 3. Decrease in blood pressure: If the dosage of the use of oxytocin is too large, it may lead to the relaxation of the smooth muscle of blood vessels, which in turn leads to a transient decrease in blood pressure. When a woman arrives at the expected date of labor, she should move appropriately and not stay in bed for a long period of time, etc., so as not to affect the smooth labor. In addition, if the fetus is too large, caesarean section is recommended to avoid difficult labor causing fetal hypoxia. At the same time should be in professional obstetricians and gynecologists under the guidance of the use of oxytocin, not self-medication.