ABSTRACT
In this article, we eported 201 singleton of breech presentation by B-mode ultrasound made 2 weeks before term.some criteria for breech delivery are as following.(1 )Diagnosis rate of breech, the ultrasonic prediction proved to be accurate by breech presentation conforming with delivery at the rate of 100%.( 2 )The estimated fetal weight: fetal weight by B-mode ultrasound corresponding to rate of delivery fetal weight by 73.6%.( 3 )Condition of fetal abnormality. there were 17 cases of umbilical cord presentation, 1 case of hyperextension of the fetal head among 201 cases.The selected Cesarean section should be performed in any of the following conditions: fetal body weight≥3400g, footling breech, umbilical cord presentation and hyperextension of the fetal head.Hence the perinatal mortality by B-mode ultrasound will be decreased