After suffering from the symptoms of lumbar pain, the following tests are usually needed: 1. The more common is the MRI of the lumbar spine. Most of the conditions of lumbar pain are caused by lesions of the lumbar spine, especially lumbar disc herniation, lumbar spondylolisthesis, lumbar spinal stenosis, lumbar fracture, lumbar tuberculosis, lumbar bacterial infection and other diseases. These diseases can be clearly detected by MRI of the lumbar spine, and a clear diagnosis can be made, and the extent of the disease and the nerve compression can be diagnosed with certainty. 2. CT examination of the lumbar spine can also be done when the lumbar leg pain is present, and the CT examination of the lumbar spine is not as detailed as MRI, but the diagnosis of most of the diseases can be determined. 3. EMG examination of sciatic nerve.