Spinal stenosis is a disease in which the anterior and posterior diameters of the spinal canal are shortened or the lateral diameter is narrowed due to various causes, compressing the dural sac, spinal cord, and nerve roots, resulting in a series of neurological dysfunctions such as pain and numbness, muscle weakness of the lower extremities, claudication, and urinary and fecal disorders. Spinal stenosis is divided into cervical spinal stenosis, thoracic spinal stenosis and lumbar spinal stenosis from the site of stenosis, and congenital spinal stenosis and acquired spinal stenosis from the etiology. The clinical manifestations include: 1, cervical spinal stenosis: the main manifestations are pain, numbness, cervical pain and swelling, sensory numbness in the extremities, radiating pain in the upper extremities, discharge-like and burning-like changes in pain, limb movement, urinary and fecal dysfunction, weakness in the extremities, muscle atrophy, and severe stenosis may lead to paraplegia, urinary and fecal incontinence under slight external force, as well as numbness in the perineum or decreased sexual function; 2, thoracic spinal stenosis Stenosis: Thoracic spinal stenosis often appears as pain in the thoracic back, and the pain persists or is difficult to relieve. Numbness of the trunk below the spinal stenosis segment often appears, as does cervical spinal stenosis, and numbness of the extremities of both lower extremities because the anatomical structure of the thoracic spinal canal is smaller than that of the cervical spinal canal and lumbar spinal canal, so the symptoms of numbness and weakness of the lower extremities appear earlier, and the gait may be unstable and limp; 3. Recurrent episodes of low back pain, hip and lower extremity radiating pain, followed by muscle weakness, numbness, muscle atrophy of the lower extremities, pain of various natures, which can be soreness, numbness, swelling, discharge-like and burning pain, and symptoms of cauda equina nerve compression, unclean urine and stool, poor bowel control, numbness in the perineum, decreased sexual function, women may have sexual apathy, men may have impotence There is also intermittent claudication, and intermittent claudication is generally not more than 1 kilometer or 500 meters, the patient appears to have weakness and numbness in both lower extremities, but by squatting or stopping walking or standing, the situation improves and then can continue to walk again, this performance is called intermittent claudication, and then is the corresponding bleeding symptoms of spinal stenosis.