Pelvic bone soreness in 50-year-old women may be caused by pelvic inflammatory diseases, local muscle tension, lumbar disc herniation, osteoporosis and so on. 1. Pelvic inflammatory disease: the elderly get pelvic inflammatory disease, mostly due to usually do not pay attention to personal hygiene, resulting in pathogen infection, lower abdominal pain, pelvic bone soreness, fever and other manifestations. 2. Local muscle tension: due to exertion or prolonged sedentary, it will lead to hip muscle strain, fascial inflammation and pain, mostly manifested as pelvic soreness and swelling. 3. Lumbar disc herniation: the protruding nucleus pulposus stimulates and compresses the adjacent nerve roots, causing discomfort and soreness in the lumbar region and pelvis. 4. Osteoporosis: After menopause, estrogen decreases and cannot inhibit osteoclasts, leading to active osteoclasts, accelerated decomposition and absorption of osteoclasts, accelerated bone loss, lumbar pain and fatigue, and pelvic bone soreness and pain. Pelvic pain in 50-year-old women may have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.