As the months of pregnancy increase, the fetus develops larger and larger. In the uterine cavity because of the amniotic fluid, the fetus can move freely, so the fetal position may be transverse, breech or cephalic, which is the medical positioning. There is no fixed fetal position in early pregnancy, and you should not be afraid of abnormal fetal position in mid-term pregnancy. Late pregnancy, that is 28-40 weeks of gestation, is late pregnancy and the fetal position can affect labor. As long as the head position is occipital anterior, there are regular and normal contractions, and the head of the fetus descends normally, the labor will be normal. Posterior occipital position or occipital transverse position insufficient force of labor, poor machine rotation, can cause difficult labor, if the fetus is lying on the transverse position must be cesarean section. The fetus is lying on its back in the abdomen seeking a comfortable position on its own, and there is no intervention.