Postpartum hemorrhage is the leading cause of maternal mortality in China at present, and its incidence accounts for 2%-3% of all deliveries. Postpartum hemorrhage is a serious complication during childbirth, and in the past, when conservative treatment was ineffective, the patient’s life had to be saved at the cost of hysterectomy, which caused a series of physiological and psychological changes and affected the patient’s quality of life. When the disease is critical, there is even no chance of hysterectomy. In some cases, although the patient’s life was saved, he was left with a serious complication – Silhan’s syndrome – due to the prolonged shock. The advent of interventional therapy has completely changed this situation, allowing for a simple and safe resolution of this critical condition without serious complications. Therefore, it is a treatment method worthy of promotion and application by clinicians. The effect of interventional treatment for postpartum hemorrhage has been called “dramatic effect” and has become the treatment of choice in hospitals where it is available because of its simplicity, safety, and rapid and complete hemostasis. Etiology: The main causes of postpartum hemorrhage are weak contraction of the uterus, placental factors, soft birth canal laceration, coagulation dysfunction, etc.. The most common cause of postpartum hemorrhage is lack of contraction, accounting for about 70-80% of the total number of postpartum hemorrhage. Treatment principle: to stop bleeding quickly, replenish blood volume to correct shock and prevent infection. 1.Conservative treatment: apply contraction agents, massage the uterus, filling the uterine cavity; soft birth canal cleft should be repaired in time; placental factors should be taken to abscission and uterine removal according to the situation (see below for treatment of placental implantation); coagulation dysfunction should be treated with drugs to improve the coagulation mechanism after removing the cause. 2.Surgical treatment: For refractory postpartum hemorrhage that is not treated by conservative treatment, internal iliac artery ligation can be used, and if necessary, the uterus can be removed. 3.Interventional treatment: For refractory postpartum hemorrhage for which conservative treatment is ineffective, internal iliac artery embolization or uterine artery embolization is used according to the situation. Compared with the above three methods, interventional therapy has the advantages of wide indications, small trauma, rapid and complete hemostasis, few complications and preservation of the uterus, and should be the preferred method for postpartum hemorrhage after failure of conservative treatment. Indications: The indications for interventional treatment of postpartum hemorrhage are very wide and can be applied to postpartum hemorrhage caused by various reasons, and the key is to grasp the timing of interventional treatment. 1.A variety of refractory postpartum hemorrhage that has been invalidated by conservative treatment. 2.Postpartum hemorrhage amounting to 1000ml, who still have bleeding tendency after active conservative treatment. Contraindications: 1.Patients with DIC combined with bleeding from other organs. 2.Patients whose vital signs are extremely unstable and should not be moved.