Hypoplastic placenta is defined as the lower edge of the placenta being less than 2 cm from the internal cervical os. It is not easily detectable in the early stages of placenta hypoplasia, and when it occurs in the later stages, the placenta will detach from the ever-expanding uterine orifice, which may result in a small amount of vaginal bleeding. In addition, placenta hypoplasia can lead to retrograde vaginal infection, bleeding from the lower part of the placenta, and obstruction of the descent of the fetal previa and the vaginal descent of the fetus after delivery. Placental hypoplasia is dangerous throughout pregnancy, but it is most dangerous in late pregnancy, during termination of pregnancy. The risk increases between the 8th and 10th month of pregnancy when the placenta becomes more closely associated with the uterine orifice. Because the placenta must be delivered together with the fetus, the corresponding blood vessels will be broken and the placenta will be detached, therefore, placental hypoplasia is the most dangerous during labor. After early detection of placenta, it is necessary to pay attention to more bed rest, avoid overexertion and maintain a good state of mind. For patients without bleeding, they can move appropriately. Usually, you should go to a relatively professional hospital for timely follow-up, hospital for regular maternity checkups, and communicate more with your doctor. For patients who have bleeding and severe pain, they should seek timely treatment to avoid dangerous situations such as hemorrhagic shock.