BL25 (Dà Cháng Shū, “Large Intestine Shu”) is the Back-Shu of Large Intestine point of the Bladder Meridian. BL25 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the fourth lumbar vertebra (L4). It regulates the Large Intestine, alleviates pain, and resolves dampness.
BL25 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the fourth lumbar vertebra (L4).
Perpendicular insertion 1.0 to 1.5 cun. Exercise caution to avoid deep insertion, especially in thin patients.
Regulates the Large Intestine, alleviates pain, and resolves dampness.
Diarrhea, constipation, abdominal pain, dysentery, lower back pain.
As the Back-Shu point of the Large Intestine, BL25 is a primary point for all disorders of the large intestine, particularly chronic diarrhea, constipation, and dysentery. It is especially effective for damp-heat accumulation in the LI, often presenting with abdominal pain and borborygmus. Clinically, it is frequently paired with ST25 (Tianshu), the Front-Mu point of the Large Intestine, to powerfully regulate bowel function.
BL25 is one of 67 points on the Bladder Meridian. Nearby points:
BL25 is located on the back, 1.5 cun lateral to the lower border of the spinous process of the fourth lumbar vertebra (L4).
BL25 regulates the Large Intestine, alleviates pain, and resolves dampness. Common clinical indications include diarrhea, constipation, abdominal pain, dysentery, lower back pain.
Perpendicular insertion 1.0 to 1.5 cun. Exercise caution to avoid deep insertion, especially in thin patients. Caution: ⚠ Reduce depth in thin patients — avoid deep perpendicular insertion.
BL25 is a point on the Bladder Meridian (Zú Tài Yáng Páng Guāng Jīng).