The diagnosis of placenta praevia is based on an ultrasound examination after 28 weeks of pregnancy in which the placenta is positioned lower than the fetal prenatal area, attached to the lower uterine segment, and the lower edge of the placenta reaches or covers the cervical introitus. Some pregnant women experience repeated vaginal bleeding without cause and painlessly in late pregnancy or after labor. Depending on the position of the placenta in relation to the opening of the cervix, placenta praevia can be categorized as complete, partial, and borderline placenta praevia. Complete placenta praevia is when the placental tissue completely covers the opening of the cervix. Partial placenta previa is when the placental tissue partially covers the opening of the cervix. Marginal placenta previa is a placenta that attaches to the lower part of the uterus, with the lower edge reaching the endocervical os, but does not extend beyond the endocervical os. Pregnant women diagnosed with placenta praevia should reduce their activities and rest to minimize irritation of the placenta and cervix and to reduce vaginal bleeding. Pregnant women who experience vaginal bleeding should seek prompt medical attention.