Postpartum hip pain may be caused by calcium deficiency, post-partum cold, ligament laxity and so on. 1. Calcium deficiency: postpartum maternal body loss, physical weakness, usually need a lot of nutritional supplements. Insufficient nutritional intake at this time may lead to calcium loss in the patient’s body, and excessive loss of calcium can easily lead to osteoporosis, which in turn causes postpartum hip pain. 2. Postpartum cold: postpartum due to changes in hormone levels, maternal immunity is usually relatively low. At this time, if you do not pay attention to keep warm and cause the body to get cold, it may stimulate the joint pain. 3. Ligament laxity: During labor, ligament laxity usually occurs due to the exertion of labor. When the body after the birth of the weak, in the slightest external force will cause the separation of the pubic bone joint, and then the symptoms of hip bone pain. The causes of postpartum hip pain vary, and it is recommended that the patient seek timely medical examination to clarify the specific cause of the disease and then follow the doctor’s instructions for treatment.