The drugs used to promote uterine contraction include IUD, misoprostol and ergonovine. 1. Iterotonin acts on the uterine receptors to contract the uterus. Iterotonin is used in a saturated state, with a daily dose of about 80mg, and the exact dosage and usage should be in accordance with the doctor’s instructions. 2. Misoprostol belongs to the prostaglandin class of drugs, usually administered orally, rectally or vaginally, with common side effects such as diarrhea, nausea and vomiting. 3. Ergonovine injection mainly acts on uterine smooth muscle, causing the uterus to produce tonic contraction, so as to achieve the purpose of hemostasis. Clinically, it is mainly used in the treatment of postpartum uterine bleeding, poor uterine regeneration and excessive menstruation. If the uterus does not contract well, you should consult a doctor in time and use the medicine under the doctor’s guidance, do not use the medicine without authorization, so as to avoid delaying the condition.