Low back pain may be caused by physiological factors such as overwork or other diseases such as lumbar muscle strain, osteoporosis or ankylosing spondylitis. 1. Overexertion: If you work for a long time at a desk or perform physical labor, you may overwork your body, which may cause pain in the lower back. 2. Lumbar muscle strain: the cause may be related to ligament injury, long-term weight bearing on the lumbar region, and vertebral arch root rupture. The patient’s lumbar region will have symptoms such as swelling and soreness, and the pain will increase after wind and exertion. 3. Osteoporosis: the cause of the disease may be related to hormone level changes, abnormal regulation of bone metabolism, endocrine diseases, blood diseases and other factors. Patients will have low back pain, weakness, easy to fracture and other phenomena. 4. Other diseases: Ankylosing spondylitis, lumbar disc herniation, trauma and other diseases may also cause low back pain. There are more reasons for low back pain, after excluding physiological factors, it is recommended to go to regular hospitals for timely consultation and examination, so as to clarify the causes and standardize the treatment.