For lumbosacral pain, you can go to the hospital for CT examination, MRI examination, X-ray examination, blood tests and other tests to clarify the cause of the disease. 1. CT examination or nuclear magnetic resonance examination: it can be used to examine the lesions in the head, chest, abdomen and other parts of the human body. CT examination can show the morphology and size of the lumbar vertebrae and other bony structures, while nuclear magnetic resonance examination can, to a certain extent, observe the changes of the spinal cord, intervertebral discs and other non-bony structures, and determine whether there is any occupying lesion in the spinal canal, which can promptly discover the cause of lumbosacral soreness. 2. X-ray examination: It is suitable for the examination of bones, thoracic organs, pelvic cavity, abdominal cavity and other parts of the body, and can find out whether there are lesions in the bones, such as infections, tumors or fractures and other discomforts, and it can also examine the degree of spinal degeneration, which is helpful for discovering the causes of lumbosacralgia to a certain extent. 3. Blood tests: blood sedimentation, rheumatism factor, C-reactive protein, etc. can be tested, which can promptly find out whether the lumbosacral pain is caused by immune factors. It is recommended that the patient should consult the doctor in time and follow the doctor’s instructions to carry out examinations and laboratory tests.