Lumbar vertebrae in the center of the posterior lumbar region, up and down a total of 5 sections, generally can first determine the position of the 5th lumbar vertebrae, the 5th lumbar vertebrae in the two sides of the iliac crest (i.e., the highest point of the pelvis) in the line, flat on the lumbar 4-5 intervertebral space, the lumbar 4-5 intervertebral space is the inferior spine is the lumbar 5 vertebrae spinous process, the corresponding vertebrae are the 5th lumbar vertebrae or the lumbar 4 spinous process, the inferior spine is the lumbar 5 vertebral spinous process. After determining the 5th lumbar vertebra, the upward sequence is lumbar 4, lumbar 3, lumbar 2, lumbar 1. In addition to this, all lumbar vertebrae can be determined based on the 1st lumbar vertebrae position, using the thoracic 12 vertebrae as a reference, the position of the 12th rib is determined first, and along the lower edge of the ribs backward to the spine, the corresponding spinous processes are thoracic 12 vertebrae spinous process, and the spinous process below the thoracic 12 spine spinous process is lumbar 1 spine spinous process, and downward in sequence are lumbar 2 and lumbar 3, The spinous processes below the spinous process of the 12th thoracic vertebra are the spinous processes of the 1st lumbar vertebra, followed by the spinous processes of the 2nd lumbar vertebra, the 3rd lumbar vertebra and the 5th lumbar vertebra.