For general women in labor, oxytocin usually takes effect within 1 hour, but the exact time when it can take effect and promote labor is related to the sensitivity of the mother to oxytocin, maternal cervical maturity, mental factors, fetal size and other factors.1. Sensitivity to the drug: If the mother is more sensitive to oxytocin, it usually takes effect 30-60 minutes after using the drug. While mothers who are not sensitive to the drug may need 2-3 days of medication before they may respond. At the same time, there are also some people who do not respond to contractions at all, at this time, they should change the mode of delivery and choose cesarean delivery; 2, other cases: generally, the cervical condition is better, the fetal previa is lower, the fetal head into the pelvic condition is better, the fetal size is smaller or transwomen, the effect of contractions will be faster, the speed of maternal delivery will also be faster, if the cervix has dilated to 1cm, when after intravenous injection of oxytocin, generally If the cervix is already dilated to 1 cm, when the intravenous oxytocin is given, labor is usually possible in 2-5 hours. In the case of primiparous women, poor fetal position, poor cervical condition and other adverse factors, it is possible to deliver in 8-10 hours. Therefore, the clinical application of oxytocin requires close observation of the progress of labor to avoid adverse consequences such as intrauterine distress caused by the ineffective action of oxytocin, and if necessary, cesarean section can be chosen to terminate the pregnancy. It is recommended that mothers should maintain a calm state of mind during labor, avoid excessive tension and anxiety, and carry out appropriate activities according to their physical condition, which is also beneficial to promote labor.