BL-30 - White Ring Shu

白环俞 - Bái huán shū

Point Region: Lower back

BL

Bladder Meridian

足太阳膀胱经 - Zú Tàiyáng Pángguāng Jīng

Location & How to Find

Anatomical Location: On the sacrum, level with the fourth opening in its back (the fourth posterior sacral foramen), 1.5 cun out from the central ridge of the sacrum. It is 1.5 cun out from the sacral hiatus, level with BL-34.

Distances are in cun, a unit that scales with each person's body. As a guide, the width of your thumb at its joint is 1 cun, and your four fingers held together, measured across the middle joints, are 3 cun.

How to Locate:

  1. Find the sacral hiatus, the small hollow just above the cleft between the buttocks
  2. Move two finger-widths out to the side
  3. The point is there
BL-30 (White Ring Shu) acupressure point location: On the sacrum, level with the fourth opening in its back (the fourth posterior sacral foramen), 1.5 cun out from the central ridge of the sacrum.

How to Apply Pressure

Using a fingertip, apply gentle, steady pressure in the fourth hollow in the back of the sacrum, level with the small hollow just above the cleft between the buttocks, two finger-widths out from the midline. Firm but never painful pressure is enough; stop if it hurts. Do not press this point during pregnancy. Skip this point over irritated or broken skin.

Traditional Indications

In TCM, this point is traditionally used for:

  • Menstrual irregularities
  • Lower back pain
  • Reproductive disorders
  • Pelvic pain

Related Health Concerns

Lower Back Pain

Select a point to see its location, how to find it, and its traditional uses.

Important Precautions

Avoid this point with:

  • Pregnancy