Zhonglushu BL-29 Acupuncture Point

Zhonglushu BL-29

Chinese: 中膂俞

Pinyin: Zhōng Lǚ Shū


At the level of the 2nd posterior sacral foramen, 1.5 cun lateral to the posterior midline. 

How to locate

First identify the Tuffier's line which connects the highest points of the iliac crest. The spinous process  of the 4th lumber vertebra (L4) mostly falls on this line. 

Then palpate in an inferior direction, passing  L5, and reach the most superior sacral spinous process. Palpate further down for two sacral processes and locate the 3rd sacral foramen in a depression less than 1 cun lateral to the 3rd process. 

Locate Zhonglushu BL-29 at the same level of the 3rd sacral foramen and 1.5 cun lateral to the posterior midline. 

Main actions

  1. Benefits the lumbar region
  2. Expels Coldness


Vertically 0.5–1.5 cun. 

Commentary for Zhonglushu BL-29

Zhonglushu BL-29 is not a major point. 

Its main action is to benefit the lumbar region and expel Coldness