Abstract: Objective:To examine the ultrasonic characteristics of abdominal pregnancy.Method:To ana-lyze the abdominal pregnancy diagnosed by ultrasound before operation combined with the results after operation retrospectively.Result:4 of 5 examples confirmed to be the abdominal pregnancy caused by uterine rupture,1 by tubal rupture.1 confirmed falsely.Conclusion:ultrasound is a kind of effective and simple method to diagnose abdominal pregnancy.