Objective:STo explore the feasibility of Ultrasound screening for early pregnancy for abnormal placenta inlet of umbilical cord.SMethods:S 400 cases of pregnant women and who underwent the examination of the posterior cervical translucency in our hospital at the 10-13 week of gestation and delivered in our hospital were selected as the observation object,and the entrance of the umbilical cord were examined by the Color Doppler instruments,which were grouped according to ultrasonic results in judging the location of umbilical cord entrance by the ultrasound doctor,which entrance to the umbilical cord is located in the lower 1/3 segment of the uterus were low entry group,while umbilical cord is located in the upper 1/3 of the uterus were normal entry group.Then,the Ultrasound confirmation again in the second trimester of pregnancy to confirm whether placenta, placenta previa, placenta previa, umbilical cord abnormalities and other adverse conditions exist,at the same time, the pregnant women were followed closely until the end of childbirth,and the condition of the placenta and umbilical cord after pregnancy and delivery were recorded and observed..SResults:SThere was no statistical difference in perinatal complications except for the placenta between the low inlet group and normal entry group,and other related complications (abnormal umbilical cord insertion, placenta previa, placental abnormality, placental abruption, umbilical cord prolapse) there were statistically significant differences(χ2were respectively: 12.132, 13.256, 7.251, 6.789, 7.894, P <0.05);SThere was no statistical difference in the mode of delivery between the two groups of patients (P>0.05);In the comparison of neonatal complications, the neonatal low neonatal Apgar score and intrapartum fetal heart abnormalities in the low entrance group were significantly different from those of the normal entrance group (χ2 were respectively 9.786 and 6.751, and P values were <0.05);The relative risk of premature umbilical cord, umbilical cord and umbilical cord adhesion, placenta previa and placental abnormalities, placental abruption and umbilical cord prolapse were respectively 5.12, 7.29, 2.04, 8.81 and 10.1,and the P values were <0.05;Conclusion:SThe results of ultrasound screening of umbilical cord entrance and development of umbilical cord in abnormality in early pregnancy have relevance,and it is important to screen the abnormal placenta and umbilical cord by screening the umbilical cord entrance at the early stage of pregnancy,thus it has good feasibility.