The hormone contractin, also known as oxytocin, is a peptide hormone secreted by the posterior pituitary gland. Contractin has a wide range of effects and is widely used in obstetrics and gynecology. It can be used to promote contraction of the uterus, when the mother has coordinated contraction weakness, small dose of static drops can promote contraction of the uterus, strengthen contraction, assist baby delivery, and reduce the rate of difficult cesarean delivery; it can also be used to induce labor in full-term pregnancy; after delivery, the uterus contraction is poor, and postpartum hemorrhage occurs, which seriously endangers the life of the mother, the contraction of the uterus can be promoted by contraction of the uterus to stop bleeding. The action of indocin on the mammary glands can promote lactation of breast tissue and ensure that the baby has sufficient breast milk. The general amount of treatment has no great effect on blood pressure, but large doses can cause an increase in blood pressure. Individual patients have allergic reactions to indocin, manifesting as dizziness, nausea, and decreased blood pressure, which must be observed during use. Patients with severe hypertension and cardiovascular disease are contraindicated. In conclusion, the proper application of contractions will play an important role, but in the process of using contractions, it is important to avoid side effects that can cause adverse consequences. In addition, the brain will secrete contraction after labor is initiated to promote contractions, and if you keep a relaxed and happy mood, it will promote contractions and make labor go smoothly.