Fetal previa refers to the part of the fetus that enters the pelvis first. Fetal previa head floating indicates that the fetal previa is the head, with the occipital part of the fetal head as the lowest part of the fetal body, which is a normal fetal position. However, head floating indicates that the fetus is still floating and not completely in the pelvis, possibly because the pregnancy days are still relatively short, or in some cases the pelvis is narrow and the fetal head is not proportional to the pelvis, resulting in the fetal head not being able to enter the pelvis and causing the fetal head floating. In addition, if the fetal head is too large or the fetal position is abnormal or placenta praevia, even if the pelvic condition of the pregnant woman is normal, this kind of phenomenon can occur, resulting in fetal head floating. If the fetal head is not in the pelvis after this time, the doctor has also decided that there is no head-pelvis disproportion, so you don’t need to pay too much attention to whether the fetal head is in the pelvis on time or not, because some pregnant women are in labor before the fetus enters the pelvis, so it is recommended to observe the development of the fetus by regular maternity checkups. Pregnant women can increase the amount of exercise, such as walking, to promote the descent of the fetal head and help the fetus to enter the pelvis as soon as possible, so that they can have a better delivery.