Dachangshu BL-25 Acupuncture Point

Dachangshu BL-25

Chinese: 大肠俞

Pinyin: Dà Cháng Shū

Location

1.5 cun lateral to the lower border of the spinous process of the 4th lumber vertebra (L4). 

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. 

Locate Dachangshu BL-25 1.5 cun lateral to the lower border of L4. 

Main actions

  1. Regulates the Large Intestine
  2. Removes Qi Stagnation in the Large Intestine
  3. Strengthens the lower back and legs

Needling

Vertically 1–1.5 cun

Commentary for Dachangshu BL-25

As the Back Transporting point for the Large Intestine, Dachangshu BL-25 is indicated for any diseases related to the Organ. 

Most importantly, it regulates the Large Intestine and promotes the bowel movement. It can be used for both diarrhea and constipation. It is often combined with Pishu BL-20 in terms of treating diarrhea.

It also removes Qi Stagnation in the Large Intestine to ease pain, distension and fullness there. 

Finally, it strengthens the lower back and legs by removing Obstruction from the Channel