Postpartum buttock pain may be caused by chronic fasciitis, pelvic injury or osteoporosis. Mothers should pay attention to rest, appropriate massage, calcium supplements, and when the pain is serious, actively seek medical attention. 1. Chronic fasciitis: Postpartum buttock pain may be caused by chronic fasciitis in the late pregnancy which has not yet healed after delivery, at this time, mothers should pay attention to rest to promote the recovery of chronic fasciitis. 2. Pelvic injuries: Postpartum pain in the buttocks may be caused by the separation of the pubic symphysis during delivery, which is not reset in time after delivery. Mothers can do some actions to promote the recovery of the pubic symphysis to promote the reset of the pubic symphysis. 3. Calcium deficiency: Postpartum pain in the buttocks may be a sign of osteoporosis. Mothers in late pregnancy will provide a large amount of calcium for the fetus, if the mother did not pay attention to calcium, may lead to osteoporosis and other problems. If you don’t pay attention to calcium supplementation, it may lead to osteoporosis and other problems. At this time, the mother should actively supplement calcium, but also more sunshine, to promote the absorption of calcium. There may be other reasons for postpartum pain in the buttocks, so it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.