BL26 Guān Yuán Shū

Reviewed by · Licensed Acupuncturist & TCM Physician · Last reviewed June 2026

BL26 (Guān Yuán Shū, “Guān Yuán Shū”) is the Back-Shu Point point of the Bladder Meridian. It is located on the lower back, 1.5 cun lateral to the midline, at the level of the space below the spinous process of the first sacral vertebra (S1). This corresponds to the 17th vertebra in the classical counting method. It strengthens the lower back, tonifies the Kidneys, and dispels wind-damp.

Location

On the lower back, 1.5 cun lateral to the midline, at the level of the space below the spinous process of the first sacral vertebra (S1). This corresponds to the 17th vertebra in the classical counting method.

Needling

Perpendicular-oblique insertion towards the midline, 1.0 to 1.5 cun deep.

TCM functions

Strengthens the lower back, tonifies the Kidneys, and dispels wind-damp..

Indications

Wind-taxation low back pain,diarrhea/dysentery, abdominal distention from deficiency, difficult urination, women's abdominal masses (jia ju)..

Back-Shu Point

Clinical notes

Guanyuan Shu is a key local point for lower back pain, especially when associated with deficiency conditions, as suggested by the classical indication of 'wind-taxation low back pain'. Its connection to the front point Guanyuan (CV4) highlights its role in treating disorders of the lower jiao, including digestive issues like diarrhea and urinary difficulties. It is often used to fortify the Kidneys and strengthen the lumbar region.

On the Bladder channel

BL26 is one of 67 points on the Bladder Meridian. Nearby points:

Frequently asked questions

Where is BL26 located?

BL26 (Guān Yuán Shū) is located on the lower back, 1.5 cun lateral to the midline, at the level of the space below the spinous process of the first sacral vertebra (S1). This corresponds to the 17th vertebra in the classical counting method.

What is BL26 used for?

BL26 strengthens the lower back, tonifies the Kidneys, and dispels wind-damp. Common clinical indications include wind-taxation low back pain,diarrhea/dysentery, abdominal distention from deficiency, difficult urination, women's abdominal masses (jia ju).

How is BL26 needled?

Perpendicular-oblique insertion towards the midline, 1.0 to 1.5 cun deep.

Which meridian is BL26 on?

BL26 is a point on the Bladder Meridian (Zú Tài Yáng Páng Guāng Jīng).

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⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.