The examination of the lumbar spinal canal includes the doctor’s inquiry and physical examination, as well as imaging auxiliary examinations such as X-rays, CT, MRI, etc. for examination. 1. Consultation and physical examination: By asking about the medical history, clinical symptoms and physical examination, the doctor can initially determine whether the patient’s lumbar spine is diseased or not. 2. Imaging examination: Imaging examination can comprehensively determine the structure of the lumbar spine and the cause of the lesion, and make a clear diagnosis. (1) X-ray: It can determine whether there are osteophytes and stenosis in the lumbar spine, whether there is anterior protrusion of the lumbar spine and whether there is lateral slip. (2) CT examination: CT examination can further see the bony structural changes in the lumbar vertebral foramen in three dimensions, such as osteophytes in the lumbar vertebrae, lumbar intervertebral discs, ligaments, and whether the nerves are extruded. (3) MRI: It can further examine the lumbar intervertebral discs, lumbar ligaments, lumbar nerves, and cerebrospinal fluid in the lumbar spinal canal, and observe changes in the vertebral body. If you suffer from lumbar spine disease, it is recommended that the patient timely hospital consultation, the doctor will be based on the condition and clinical judgment to prescribe the appropriate clinical examination, the specific diagnosis of the disease or the combination of imaging and clinical manifestations for comprehensive analysis.