At present, clinical ultrasound is often used to understand the position of the fetus, to determine whether there is low fetal position and other conditions, the patient generally can not determine whether there is low fetal position. Fetal position refers to the position of the fetus in the uterine cavity, under normal circumstances, the fetus is usually head down, low fetal position is usually the first part of the fetus into the pelvis, often caused by the dilatation of the cervical os, the head of the fetus down. Ultrasound is widely used in fetal imaging monitoring, which can not only help determine the fetal position, but also understand the position of the placenta, the maturity of the placenta, and the condition of amniotic fluid. If you want to determine the position of the fetus, you should go to a regular hospital to determine whether there is a low fetal position and other conditions through the examination, and prepare for delivery if necessary. Pregnant women should maintain a comfortable mood, pay attention to rest in general, and go to the hospital for regular checkups.