Postpartum hemorrhage refers to vaginal bleeding exceeding 500ml shortly after childbirth, or vaginal bleeding exceeding 1000ml within 24 hours after childbirth. Postpartum hemorrhage is a critical situation in clinical practice and is the leading cause of maternal death. For postpartum hemorrhage, it is essential first to identify the cause. Common causes of postpartum hemorrhage include uterine atony, retained placenta or membranes, trauma to the birth canal, and coagulopathy. In cases of postpartum hemorrhage, treatment should start with addressing the cause, such as using drugs that promote uterine contraction, massaging the uterus, and paying attention to cleaning the uterus and suturing any tears. Simultaneous symptomatic treatment should also be administered, which involves the transfusion of blood products to improve circulating blood volume and prevent the onset of hemorrhagic shock.