The placenta is attached to the anterior, posterior, right and left side walls of the uterus. The placenta is in a normal position as long as it is above the prenatal exposure and the lower edge of the placenta does not reach or cover the endometrium. Abnormal placenta position is mainly manifested as placenta praevia, which can be partial placenta praevia, central placenta praevia, and central placenta praevia, which is the most dangerous type of obstetric comorbidity and belongs to high-risk pregnancy. The position of the placenta is determined by ultrasound during pregnancy. If the placenta is found to be in an abnormal position, it is necessary to seek medical attention in a timely manner and take different methods of treatment under the guidance of the doctor. When the placenta praevia is approaching full term, in order to avoid hemorrhage of the placenta praevia, which may endanger the life of the pregnant woman and the fetus, Caesarean section can be chosen to terminate the pregnancy. If abnormal placenta position occurs, you need to go to the hospital in time for treatment.