The pubic bone during pregnancy is located at the junction of the root of the thigh and the lower abdomen, below the female pubic mound. The pubic bone is divided into two parts: the pubic symphysis and the pubic arch. The surface of the pubic symphysis formed by the upper and lower branches of the pubic bone is connected by cartilage, constituting the pubic symphysis. In late pregnancy, due to uterine compression and changes in hormone levels during pregnancy, it is easy to lead to separation of the pubic symphysis, but most of them can be recovered after delivery. Therefore, pregnant women should pay attention to rest and avoid standing for a long time. The descending angle of the descending branch of the pubic bone is called the pubic arch, and the difficulty of labor is related to the angle of the pubic arch. It is important to note that in order to have a smooth labor, pregnant women should have regular checkups. In addition, pregnant women should also pay attention to rest and avoid overwork in order to prevent physical discomfort.