Posterior pelvic tilt can cause varying degrees of flat and sagging hips and hunchback. Posterior pelvic tilt is a tilt of the pelvis along the horizontal axis of the pelvis toward the back side of the body, which can be caused by poor posture, excessive exercise, hip arthritis, and laxity of the muscles around the pelvis. Posterior pelvic tilt can lead to flattening of the hips and varying degrees of hunchback. At the same time, the pelvic tilt will also affect the physiological curvature of the lumbar spine, leading to the aggravation of the degenerative changes in the lumbar spine, which will cause soreness and pain in the lumbar region. Therefore, when the body appears hunchback, lumbar soreness and pain symptoms, should pay attention to, timely to the hospital orthopedic consultation, in order to clarify the diagnosis and actively cooperate with the treatment, to avoid aggravation of the condition.