Lumbosacral examination, generally can do X-ray film examination, CT examination or MRI examination, sometimes also need to be combined with laboratory tests. Lumbosacral pain and discomfort can be caused by a variety of factors, which can be diagnosed and treated through a variety of tests. The most common test is an X-ray, which can generally determine whether there are changes in the bony structures and whether there are any abnormalities in the sacroiliac joint space. If the X-ray examination is still unable to make a clear judgment, it can also be combined with CT or MRI examination for further clarification. CT examination can clearly determine whether there is damage to the sacroiliac joints and whether there are pathological changes in the bony structures of the lumbosacral region; MRI examination is more advantageous in displaying the structures in the spinal canal and the surrounding soft tissue structures. Some diseases need to be further determined by laboratory tests, such as C-reactive protein and blood sedimentation. When the symptoms of lumbosacral pain and discomfort appear, you should go to the regular hospital for consultation and treatment in a timely manner, and do not take care of it on your own, so as not to delay the condition.