Postpartum hemorrhage （PPH） is a common obstetric complication and can lead to maternal mortality in severe cases. Uterine atony，laceration of the birth canal，placental factors，and coagulation disorders are the four primary etiologies of PPH，which may occur individually or concurrently. However，significant individual variations exist in the underlying mechanisms and clinical manifestations of these etiologies. Therefore，individualized management strategies are crucial for improving patient outcomes. Based on evidence-based medicine and clinical practice，this article systematically elaborates on a individualized assessment framework，tiered management strategies，and a multidisciplinary collaboration model for the four major etiologies. It emphasizes the development of precise，individualized treatment plans tailored to the patient’s specific condition and available medical resources，aiming to offer insights for clinical practice.