Low back pain in the elderly is generally the result of degenerative changes in the lumbar spine. Although the causes are complex and multifaceted, they are summarized as follows: 1. Degeneration of the lumbar spine As soon as we enter adulthood, development gradually stops, followed by degenerative changes also begin. Degenerative changes in the lumbar spine in old age can often lead to back pain symptoms. 2, endocrine disorders endocrine function has a direct relationship to the metabolism of bone. When sex hormone secretion decreases in the elderly, or when adrenocortical hormone secretion is hyperactive, it can cause osteoporosis, ligament and joint capsule relaxation of the lumbar spine. This can easily cause lumbar pain. 3, the physiological curvature of the spine changes the line of gravity of the human body through the back of the vertebrae or intervertebral discs of the lumbar spine rather than through the synovial joints, which is a change in the physiological curvature of the spine of the elderly and thus produce symptoms of low back pain. 4, long-term lumbar spine activity and excessive load, improper posture: with the passage of time, people old can cause the nucleus pulposus of water and nutrients to reduce, the volume of the intervertebral disc rapidly shrinks, elasticity decreases significantly, resulting in the formation of osteophytes, stimulating nerve tissue, resulting in symptoms of lumbar pain. Certain conditions in the elderly such as visceral diseases, spinal cord tumors, lumbar spine tuberculosis, etc. can also cause low back pain in the elderly not all caused by degenerative changes in the lumbar spine.