Clinically, many middle-aged and elderly people always say during the consultation, “To walk a long distance, you have to take a break, or you can’t walk at all, but as long as you sit and rest, you can continue to walk again.” This phenomenon is medically known as “intermittent claudication”, mostly due to age-related lumbar spine degeneration and hyperplasia, resulting in deformation or narrowing of the lumbar spinal canal, nerve root channel and intervertebral foramen, causing pressure on the cauda equina or nerve root, resulting in the corresponding clinical symptoms. The normal human lumbar spinal canal and the nerve have a large reserve space between them, and these spaces are fatty tissue, mild stenosis in the early stage only encroaches on the reserve space of the spinal canal, and the nerve has not yet been compressed, at this time the patient is asymptomatic, or there is only a slight lumbar pain and discomfort, and the symptoms can be relieved after rest. As the degree of lumbar spinal stenosis increases and the reserve space of the spinal canal disappears, the nerve is compressed. The reason why intermittent claudication occurs when walking is because the lumbar spine is in a straightened state when a person walks, and the spinal canal cavity is relatively narrowed, which, together with the movement of the lower limbs, causes tissue congestion and edema in the spinal canal, thus compressing the cauda equina or nerve roots and producing weakness, numbness and pain in the lower limbs. When a person rides a bicycle, the lumbar region is in a forward-flexed state, at which time the posterior intervertebral disc gap widens and the spinal canal cavity expands, and symptoms do not appear. With the development of the disease, the lumbar spinal stenosis patients reduce the lumbar symptoms or even disappear, but instead, numbness, pain, weakness, coldness, loss of skin sensation or even muscle atrophy, paralysis, incontinence, etc. appear in the lower limbs. Therefore, early detection, early diagnosis and early treatment are necessary. Non-surgical treatment only relieves the symptoms to a certain extent. When the pain continues to affect the patient’s normal life and work, surgical treatment should be considered to enlarge the spinal canal. The only effective method for lumbar spinal stenosis is surgical expansion of the spinal canal, and the specific treatment plan can only be performed after professional imaging. CT and MRI examinations can clarify the degree of lumbar vertebral degeneration, in which vertebral body the hyperplasia is located, and whether the lumbar spine is deformed or whether there is a combination of other vertebral lesions. If the patient is accompanied by lumbar spine slippage or scoliosis deformity, it is important to choose an experienced spine surgeon for surgical treatment to effectively avoid complications such as vertebral instability. Warm reminder: If one day you find yourself or your family members reluctant to walk a little farther, walk for a while with soreness, numbness or pain in both legs, and need to rest and then walk, be alert to lumbar spinal stenosis.