First of all, due to the physiological differences between men and women, there are obvious differences in pelvic morphology. The upper opening of male pelvis is heart-shaped, the upper opening of female pelvis is round, and the lower opening of male pelvis is narrower than that of female pelvis. Male pelvic cavity is narrow and long and funnel-shaped, and the sacrum has obvious protrusion, and the angle of the inferior pubic angle is relatively small. Female pelvic cavity is relatively short, but the cross section is relatively wide, similar to the shape of a barrel. The sacral promontory is not as obvious as that of men, and the inferior pubic angle is relatively large, generally ranging from 80 degrees to 100 degrees.

Secondly, the male pelvis is narrow in shape and its height is higher than that of the female pelvis. The pelvic wall is thick and rough. The bones of pelvis are relatively heavy, which is also a feature of men's whole body bones, while women's pelvis is more elastic.

In addition, women's pelvis is more prone to some diseases, especially after giving birth to a baby, many women have pelvic deformation problems. But as long as you pay attention to postpartum care, most postpartum pelvic deformation can still be recovered. However, improper nursing may induce pelvic inflammatory disease or cause permanent deformation.