Recently, a pregnant mother nearing delivery asked me if she needed to be hospitalized early because her relative had a postpartum hemorrhage and lost most of her blood. As the most common and serious complication of obstetrics, postpartum hemorrhage is the main cause of maternal death, but postpartum hemorrhage is not a problem for everyone, as long as you can do a good job of prevention, in fact, can greatly reduce the probability of postpartum hemorrhage. Common causes of postpartum hemorrhage: 1, weak uterine contraction: the uterus does not contract after delivery, like a loose cloth bag, causing the expansion of the blood sinus 2, placenta-fetal membrane residue: such as placenta residue, adhesions or placental implantation 3, soft birth canal laceration: laceration of the cervix, vagina, vulva, causing postpartum hemorrhage 4, coagulation dysfunction: relatively rare, more combined with blood system diseases How to prevent postpartum hemorrhage? 1, family planning, avoid multiple abortions; 2, comprehensive prenatal examination, if there is anemia, hematological system diseases or other medical comorbidities to give timely correction, for multiple births, large fetuses, excessive amniotic fluid or previous history of stalled labor, postpartum hemorrhage to prevent possible problems later; 3, reasonable control of diet, weight control, to avoid excessive fetal size; 4, to maintain a relaxed mood, learn to 5.Learn to breastfeed as early as possible, strengthen postpartum observation, pay attention to uterine contractions and vaginal bleeding; 6.Pay attention to personal and environmental hygiene, especially vulvar cleanliness, wash and change underwear regularly to prevent puerperal infection, and when bloody malignant dew persists for a long time after delivery, go to the hospital in time to avoid late hemorrhage, which may endanger life; 7.For high-risk pregnant women, carry out targeted prevention before delivery. 7. For high-risk pregnant women, carry out targeted prevention before delivery.