Abstract: Objective: To investigate the factors related to the emergency hysterectomy，operation duration and the questions concerned. Methods: The clinical data of 18 cases having received hysterectomy in obstetric emergency from 2006 to 2012 were analyzedretrospectively. Results: Among the 18 cases，14 were due to placental factors( 77. 8%) ，3 uterine rupture( 6. 7%) and 1 amniotic fluid embolism( 5. 6%) . Eleven of the 18 patients were in a hemorrhagic shock state and had persisted refractory uterine bleeding. Conclusions: Multiple curettage，multiple pregnancy and cesarean section are the high risk factors for maternal hysterectomy;emergency hysterectomy might save the life of the patients. Forceful perinatal health care and low rate of cesarean section can effectivelyreduce the rate of emergency obstetric hysterectomy.