Postpartum back pain is afraid to turn over, it may be caused by joint laxity, calcium deficiency, pelvic inflammatory disease and other reasons. 1. Joint laxity: due to the change of hormone level in the body, the resistance of the body decreases and the joints become lax, which may cause pain and other discomforts after delivery. 2. Calcium deficiency: the demand for calcium is greater during breastfeeding, and if you don’t pay attention to supplementation and calcium supplements after giving birth, you may easily suffer from calcium deficiency, such as low back pain, leg cramps, and so on. You need to take proper calcium supplements during breastfeeding. 3. Pelvic inflammatory disease: postpartum, especially after cesarean section, maternal body resistance decreases, if you do not pay attention to easily secondary pelvic infection, inflammation stimulation may also cause abdominal pain and lumbar pain discomfort symptoms. There are other reasons for postpartum back pain lying down and not daring to turn over, if the symptoms can not be relieved, it is recommended to go to the hospital as soon as possible to find out the cause, and active treatment. Normally, we should pay attention to rest, avoid too much exertion, and supplement nutrition.