Spinal stenosis is generally divided into congenital (primary) and acquired (secondary). It is categorized into cervical spinal stenosis, lumbar spinal stenosis, and thoracic spinal stenosis by site. By anatomical site it can be categorized into central stenosis, lateral saphenous fossa stenosis, and neurogenic foraminal stenosis. Spinal stenosis refers to various forms of narrowing of the spinal canal, the nerve root canal, and the intervertebral foramina, including volume changes in the spinal canal caused by soft tissues (e.g., hypertrophy of the ligamentum flavum, calcification of the posterior ligament, etc.) and narrowing of the dural sac itself. Due to the spinal stenosis caused by the spinal cord and the nerve, blood vessel compression and irritation caused by the occurrence of the disease, the main symptom of the disease is low back and leg pain, and in severe cases, weakness of the two lower limbs can occur. Congenital spinal stenosis is caused by congenital narrowing of the spinal canal during spinal growth and formation, including nutritional trauma. Most patients start asymptomatic and develop signs and symptoms of spinal stenosis after middle age due to degenerative spinal lesions or injuries. Acquired spinal stenosis is due to disc herniation, vertebral body hyperplasia, vertebral body slippage, as well as the posterior longitudinal ligament, ligamentum flavum hyperplasia, hypertrophy, calcification or ossification, etc., which stimulate the spinal cord nerves and peripheral blood vessels, resulting in inflammation of the neurovascular adhesions, congestion, edema, which leads to the occurrence of spinal stenosis. The hazards of spinal stenosis 1, urinary and fecal disorders generally appear later. Early for urinary and fecal weakness, with frequent urination, urinary urgency and constipation is common, late can appear urinary retention, urinary and fecal incontinence. 2, claudication Symptoms are aggravated when the spine is extended backward and reduced when it is flexed forward. A few patients have muscle atrophy of the lower limbs, and Achilles tendon reflex is sometimes weakened or disappeared. And also accompanied by claudication symptoms. 3, activity limitation Movement disorder is mainly caused by vertebral stenosis vertebral body bundle sign, limb weakness, stiffness and inflexibility, which causes lower limb weakness, heavy legs, began to have a tendency to fall, walking with a sense of falling, standing gait is unstable, easy to kneel down, the need to have auxiliary wall or crutches to walk, the symptom gradually aggravated, become the initial reaction of quadriplegia. 4.Nerve root irritation Nerve root irritation symptoms, such as thoracic and back girdling sensation, pain, with obvious symptoms of lumbar and leg pain. Prevention is greater than treatment Vertebral stenosis occurs in men aged 40-50 years old, especially lumbar vertebrae 4-5 and lumbar 5 sacral 1 are the most common, in addition to lumbar vertebrae, spinal stenosis also occurs in the cervical vertebrae, compared to other diseases, the early symptoms of spinal stenosis are not obvious, and only when the disease develops to a certain extent, there will be one side or both sides of the radicular radiating neuralgia, however, if you can’t treat the disease at the early stage, it is very difficult to get a good result. However, for this disease, if you can’t start treatment at the beginning of the disease, it’s hard to get better results, so people should be careful with this disease. 1, usually pay more attention to reasonable labor posture and good habits. When lifting heavy objects, hip and knee bending squatting, waist and back straight, heavy objects tight pressure on the body, before you can force to stand up and step. When carrying a heavy object on the back or shoulder, the chest is slightly bent forward, the hips and knees are slightly bent, the steps are steady, and the steps should not be big. When sleeping, the head and neck should be natural neutral position, both hips and knees slightly flexed, and to avoid the body from wind and cold moisture. 2, do not sit or work too long, should be avoided due to long-term maintenance of a posture brought about by soft tissue fatigue, before strenuous exercise, pay attention to the preparatory activities and protection. 3, for the use of waist labor intensity of the occupation, to wear a protective role of the wide belt. Prevention of spinal stenosis should first have good habits, such as should not sit or head down too long. To start from the daily habits, develop good posture to prevent spinal stenosis.