The pubic symphysis is composed of the pubic bones on both sides and the fibrocartilaginous disc in the middle. Ligaments strengthen the symphysis above and below. The cartilaginous disc often has a sagittal fissure-like cavity, but no synovium. Therefore, the pubic symphysis has a certain degree of mobility. This is of certain significance for the expansion of the pelvic cavity during childbirth. The structural characteristics of the pubic symphysis often cause pubic fractures when subjected to violent impacts, but it is not easy for the pubic symphysis to separate. However, when external forces fail to cause pelvic fractures, including sacroiliac joint displacement, it will inevitably cause pubic symphysis displacement and easily cause this disease. Osteitis pubis is a non-suppurative lesion occurring in the pubic symphysis area, manifested as pain in the pubic symphysis and pubic branches, and is more common in women. The condition can last for several years and can eventually heal itself.