How to find

For orientation in the lumbar region, first, determine the Tuffier’s line (a line connecting the highest points of the iliac crests), which in most cases intersects with the spinous process of L4 (note: this may change depending on the patient’s position. From there, count upward to the lower border of the spinous process of L2 and, on this level, locate BL-23 1.5 cun in a lateral direction, on the highest point of the paraspinal musculature. Located on the same level are GV 04 (Gate of Life) (on the midline), a point of Ex-B-2/BL 52 (Residence of the Will) (0.5 cun/3 cun lateral of the midline).


1.5 cun lateral to the posterior midline, on the level of the lower border of the spinous process of the 2nd lumbar vertebra (L2).


  • Strengthens the Kidneys, tonifies the Kidney Qi and Yang, benefits the Essence (jing), nourishes the Kidney Yin
  • Regulates the Lower Heater, benefits the uterus
  • Benefits the bones and the marrow
  • Benefits the eyes and ears
  • Strengthens the lower back


Back-shu point of the Kidneys, according to some authors, meeting point with the du mai. Major point for tonifying the Kidneys. Use tonifying needle techniques for all Kidney deficiency syndromes. Moxibustion tonifies especially the Kidney Yang. Caution: Moxibustion is contraindicated for Kidney Yin deficiency with empty Heat (Heat in the Five Hearts (Heat in the thorax, the palms and the soles of the feet), night sweats, restlessness, often a red tongue).