Abstract: Postpartum haemorrhage remains the leading cause of maternal death worldwide.  During pregnancy and delivery，various reasons can lead to secondary uterine weakness，and improper treatment often leads to refractory postpartum hemorrhage，and even perinatal hysterectomy，disseminated intravascular hemorrhage（DIC），multiple organ failure and other serious complications.  Therefore，once postpartum hemorrhage occurs，it is necessary to find the cause in time, make joint treatment，accurately and effectively curb the development of the disease, and avoid the occurrence of severe postpartum hemorrhage and DIC caused by secondary uterine atnoy，which is the key to effectively reducing the mortality rate of postpartum hemorrhage in pregnant women.

Key words: postpartum hemorrhage, secondary uterine atony, joint treatment, multidisciplinary cooperation, prevention and control of DIC

摘要： 在全球范围内产后出血仍然是导致孕产妇死亡的主要原因。妊娠及分娩过程中多种原因均可导致继发性子宫收缩乏力，处理不当常导致难治性产后出血，甚至导致围产期子宫切除、弥散性血管内凝血（DIC）、多器官功能衰竭等严重并发症。因此，一旦发生产后出血应及时查找病因，联合处置，准确有效遏制病情发展，避免继发性子宫收缩乏力引发严重产后出血及DIC的发生，是有效降低孕产妇产后出血死亡率的关键。

关键词: 产后出血, 继发性子宫收缩乏力, 联合处置, 多学科合作, DIC防控