Abstract:OBJECTIVE To investigate the application of hemabate uterine muscle injection, short- term blocking uterine blood flow combine with low B-Lynch suture in the treatment of placenta previa cesarean section hemorrhage. METHODS Selected 64 cases patients with postpartum hemorrhage after cesarean section with placenta previa treated in our hospital Obstetrics and Gynecology Department fromJanuary 2016 to March 2017, according to the random number table method, all patients were divided into observation group and control group, 32 cases in each group. The control group received conventional treatment, using oxytocin, at the same time placental hemostasis; after delivery of fetusthe patients in the observation group received hemabate uterine muscle injection, while low B-Lynch suture, compared the clinical efficacy of the two groups. RESULTS Patients in the observation group, the amount of postoperative bleeding, postoperative 2H bleeding was significantly less than those of the control group (P< 0.05). The average operation time of the observation group was significantly shorter than that of the control group (P< 0.001). Number of cases of blood transfusion were significantly lower than those of the control group (P＜0.05). The hospitalization time and hospitalization cost of the observation group were significantly lower than those of the control group (P< 0.01). There was no significant difference between the two groups of patients with postoperative bleeding and the recovery of menstruation (,P> 0.05). Two groups of patients with no postoperative infection, no maternal death. CONCLUSION Hemabate uterine muscle injection, temporarily blocking blood flow to the uterus combined with low B-Lynch suture can effectively reduce bleeding of placenta previa cesarean section patients, can play a good clinical effect, effectively reduce the operation time and improve clinical prognosis.