Abstract: With the increase of the number of patients with placenta previa and placenta accreta, the incidence of adverse pregnancy outcomes increases, and the severe postpartum hemorrhage and hysterectomy will endanger the patient's life. Pelvic devascularization and lower segment cervical suture are the two major surgical hemostasis methods in cesarean section, the former includes intravascular interventional therapy and tourniquet binding, while the latter includes various ways, but both are in the stage of clinical exploration. Based on the clinical experience of scholars at home and abroad, this paper discusses the above methods in order to provide reference for clinicians to choose different surgical methods.