The use of contractions to strengthen contractions, soften the cervix, promote cervical maturation, and the therapeutic effect of postpartum hemorrhage, the use of contractions are intravenous drip, there is an intramuscular injection, in addition, can also be the body of the uterus or cervical injection, different methods of use, is applicable to different situations. In the postpartum period, it is usually an intramuscular injection or an intravenous drip. After the delivery, you can inject the uterine body and the cervix with contractions, and before delivery, if you are using contractions to promote the maturation of the cervix to induce labor, also intravenous injections of contractions. The precautions for the use of indocin, if the patient has a contraindication to use, is not able to use, in the prenatal use of indocin, must be strictly controlled drip rate and dosage, because in the prenatal, if a large number of indocin, will increase the risk of uterine rupture.