Objective To evaluate the value of appearance in ultrasonographic and clinical significance in the diagnosis of the placenta abnormality. Methods The middlelate pregnant women were detected with two-dimensional color Doppler ultrasound. The pregnant women with placental abnormality were observed and explored the identification methods and analyzed the reasons of misdiagnosis. Results 151 cases with placental abnormality was detected by Doppler ultrasound, including 79 placenta previa, 28 placental abruption, 9 velamentous placenta, 12 placental placenta, 14 placenta increta and 9 placental chorionic hemangioma. Confirmed by pathology, postpartum ultrasonic diagnosis correct were 128 cases. The diagnosis coincidence rate was 84.77%. Conclusions Prenatal ultrasound diagnosis of placenta is the most simple and effective method, which has the advantages of no trauma, no pain and high diagnostic accuracy,and handle sthe placenta anomalies, provide reliable clinical diagnosis and treatment and has important significance for improving the prognosis of fetus.