Lumbar spinal stenosis is diagnosed according to its clinical symptoms, imaging examinations, and power dislocation films, etc. in a comprehensive manner. The details are as follows: 1. Clinical symptoms: the most typical symptom is intermittent claudication, when walking, due to pain, numbness and other discomfort, and often after walking for a period of time, it is necessary to stop. In addition, there may also be symptoms such as diaphoresis, reflex changes and changes in muscle strength of the lower limbs; 2, imaging examinations: X-rays, CT, MRI and other examinations can have more clear image display; 3, power bit film: when necessary, power bit film can also be added to have a more accurate diagnosis of the condition.