【Abstract】Objective To compare the efficacy of modified Hayman suture and B-Lynch suture for treatment of postpartum hemorrhage in cesarean section. Methods From January 1, 2010 to June 30, 2019 in China Emergency General Hospital, there were 35 cases with modified Hayman suture（Hayman group）and 46 cases with B-Lynch suture（B-Lynch group）during cesarean section due to intra-operative bleeding. The treatment effects were observed.Results The operation time, amount of postpartum hemorrhage, volume of blood loss 24 hours after surgery, rate of blood transfusion, hemoglobin deceased and puerperal morbidity in the Hayman suture group were less than those of the B-Lynch suture group(P＜0.05). There was no statistically significant difference in the efficiency, postoperative ICU occupancy, hospitalization stay, hemorrhagic duration of lochia, incidence of late postpartum hemorrhage and menstruation recovery between the two groups(P＞0.05). Conclusion Comparing to B-Lynch suture，modified Hayman suture for the treatment of postpartum hemorrhage in cesarean section is more simple and faster. It can obviously reduce the operation time, bleeding, blood transfusion rate and puerperal morbidity.