The upper edge of the pubic symphysis is in the lower abdomen of the body, and under normal circumstances, a bony mark can be touched at the junction between the lower abdomen and the legs of the body, which is called the pubic symphysis node. Some fibers and ligaments of the bilateral pubic tuberosities are connected to form the anterior pubic symphysis, and its upper edge is the upper edge of the pubic symphysis. For men, the superior border of the pubic symphysis is not very significant, but for women, the superior border of the pubic symphysis means the beginning of the pelvis or the bony birth canal, and if this circle is too narrow, it can lead to abnormal delivery of the fetus. Therefore, the position of the pubic symphysis is more important for women because it is an objective indicator of the existence of the female physiological function, and if the upper edge of the pubic symphysis is too low, there will be a narrow pelvis, which will prevent the normal delivery of the fetus.