Closer to the inclination of the female pelvis is the obstetric delivery. The normal female pelvis is inclined at an angle, usually 45 degrees, and the angle should not be too small or too large. Because the angle determines whether the fetal head can easily enter the true pelvis and whether it can be born smoothly, the normal angle of pelvic tilt for women should be about 45 degrees. The normal angle of a woman’s pelvis should be about 45 degrees. Too large an inclination and too gentle an inclination are not conducive to the entry of the fetal head into the pelvis, that is, around 45 degrees, which is more conducive to the entry of the fetal head into the pelvis. After the fetal head is in the pelvis, the fetal head can be rotated in the pelvis and delivered out of the mother’s vaginal opening, so the tilt of the pelvis is closely related to the delivery. If the pelvic tilt is not good, it is sometimes possible to artificially help the fetal head to enter the pelvis. The majority of people have a normal pelvic tilt, but only people with fractures and trauma can sometimes affect it.