Objective To describe the imaging of the vagina massive hemorrhage patients,which is caused by pero-abortion by the high-frequency ultrasonic examination,and to establish the character of ultrasound.Methods 56 patients,who have the vagina massive hemorrhage after the drug abortion,were checked by the high-frequency ultrasonic examination,to observe if there are fetus in the uterus.Results There all have fetus in the uterus in 56 patients by the high-frequency ultrasonic examination.Including 8 patients who have little residues;22 patients have residues complic fluidify in the uterus;26 patients have admix residues.Conclusions After the drug abortion,the vagina massive hemorrhage,which is caused by pero-abortion,is the severity complication endangering the life of the patients,we cound found the pero-abortion early by the high-frequency ultrasonic examination and clinical observe.