There are several possible causes of lumbar stiffness: first, rheumatoid, when rheumatoid involvement of the spine can appear lumbar stiffness, especially in the morning when the lumbar stiffness and pain is very obvious, then early blood tests and X-ray of the spine, limb joint X-ray examination, to make early diagnosis and early treatment; second, ankylosing spondylitis, ankylosing spondylitis is common in The first is lumbosacral pain, which can spread upward to the entire spine, and the symptoms of stiffness in the lower back and the entire back, which should be diagnosed and treated early with blood tests, X-rays and spinal MRI.