BL24 Qì Hǎi Shū

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

BL24 (Qì Hǎi Shū, “Qì Hǎi Shū”) is the Back-Shu point point of the Bladder Meridian. It is located on the lower back, 1.5 cun lateral to the lower border of the spinous process of the third lumbar vertebra (L3). It strengthens the lower back, regulates the lower jiao, and treats hemorrhoids.

Location

On the lower back, 1.5 cun lateral to the lower border of the spinous process of the third lumbar vertebra (L3).

Needling

Perpendicular-oblique insertion towards the spine, 1.0 to 1.5 cun. Deep needling carries a risk of injuring the kidney, so caution is advised.

TCM functions

Strengthens the lower back, regulates the lower jiao, and treats hemorrhoids..

Indications

Low back pain, hemorrhoid disease, bloody dysentery, hemorrhoidal fistula..

Back-Shu point

Clinical notes

Qi Hai Shu is a key local point for low back pain, particularly when associated with deficiency in the lower jiao. Its name connects it to the "Sea of Qi" (CV6), underscoring its role in fortifying the source Qi and essence. Classically, it is also a primary point for treating various types of hemorrhoids and related bleeding, making it useful for disorders of the large intestine and anus.

On the Bladder channel

BL24 is one of 67 points on the Bladder Meridian. Nearby points:

Frequently asked questions

Where is BL24 located?

BL24 (Qì Hǎi Shū) is located on the lower back, 1.5 cun lateral to the lower border of the spinous process of the third lumbar vertebra (L3).

What is BL24 used for?

BL24 strengthens the lower back, regulates the lower jiao, and treats hemorrhoids. Common clinical indications include low back pain, hemorrhoid disease, bloody dysentery, hemorrhoidal fistula.

How is BL24 needled?

Perpendicular-oblique insertion towards the spine, 1.0 to 1.5 cun. Deep needling carries a risk of injuring the kidney, so caution is advised.

Which meridian is BL24 on?

BL24 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.