The scientific name of oxytocin is contraction, as the name suggests its role is to contract the uterus, in prenatal can be used to induce labor to start contractions, postpartum injection can promote uterine contraction, effectively reduce uterine bleeding; miscarriage patients with more bleeding, uterine contraction is not good, you can also choose to contraction injection. The purpose of choosing contraction injection is different in different cases. Intravenous injection of contraction, the injection site does not hurt, if it is to induce labor to induce regular uterine contractions, after dilution to control the number of drops, adjust the emergence of good contractions, this contraction induced by contraction, will not be very painful, once the drip is stopped, gradually contractions will weaken or disappear; but once induced its own contractions, that is, to induce labor, there will be back pain and abdominal pain of regular contractions, at this time, the health care personnel will Depending on the contractions, the number of drops may be slowed down or the drip may be stopped. When the contractions are weak during labor, the contractions will be strengthened and the labor will be promoted by applying the contraction drip, which will be accompanied by frequent strong contractions with back pain and abdominal pain. After delivery, in order to strengthen contractions and reduce postpartum hemorrhage, you can apply the intrauterine drip, or take intramuscular injection; intramuscular injection will cause local pain at the injection site, soon after the injection, but it will be accompanied by lower abdominal pain, which is the contraction pain caused by the drug to promote uterine contraction. If you have doubts about the application of labor induction drugs, you can communicate with your doctor in time, who will explain in detail the use, usage and precautions. For induction of labor, it is necessary to use small doses of IV. Do not blindly adjust the rate of liquid drip by yourself, so as not to increase the risk to mother and baby by too fast or too much. The sensitivity of each person to the drug varies. Once abdominal pain occurs, report to the doctor so that the drip rate can be adjusted in time according to the contractions.