Postpartum hemorrhage had been the first killer of women in labor, postpartum hemorrhage should pay attention to the following: 1, timely referral of women with higher risk of hemorrhage, such as patients with hematological and medical diseases, for patients with poor coagulation function should be promptly transferred to a tertiary hospital for delivery, delivery after the preparation of blood sources to prevent postpartum hemorrhage and correct coagulation; 2, observe the process of delivery, excessive prolongation of labor will cause uterine fatigue, weak contraction, and Avoid violent delivery, rough delivery will tear the birth canal and cause postpartum hemorrhage; 4. Check whether the placenta and membranes are intact, if the placenta and membranes are completely expelled, their risk of postpartum hemorrhage is low; 5. Check whether there is paracoplacenta, some pregnant women have two placentas, a normal large placenta and a leaf-sized paracoplacenta.