The cause of recurrent bleeding due to low placenta position is that the placenta grows on the endocervix and lower part of the uterus, which misaligns and separates from its attachment during contractions, thus triggering vaginal bleeding. Low placenta position refers to the abnormal position of the placenta, which is lower than the prenatal part of the fetus, attached to the lower part of the uterus, reaches the lower edge or covers the endocervix, also known as placenta praevia. Placenta praevia is characterized by recurrent, unprovoked, painless vaginal bleeding in late pregnancy or after labor. The placenta previa, which is attached to the lower part of the uterus and the cervical os, is poorly stretched, and when the cervical os is dilated, it separates from its attachment and vaginal bleeding occurs. During the period of vaginal bleeding, pregnant women are advised to take bed rest and observe the amount of vaginal bleeding, and go to the hospital as soon as possible, and if the bleeding is heavy, consider terminating the pregnancy according to the doctor’s advice.