BL54 Order Limit

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

BL54 (Zhibian, “Order Limit”) is an acupuncture point on the Bladder Meridian. It is located on the sacrum, 3 cun lateral to the median sacral crest, at the level of the 4th sacral foramen. It activates blood, alleviates pain, and benefits urination.

Location

On the sacrum, 3 cun lateral to the median sacral crest, at the level of the 4th sacral foramen.

Needling

Perpendicular insertion 1.0-1.5 cun. Caution for sacral nerves.

TCM functions

Activates blood, alleviates pain, and benefits urination.

Indications

Sciatica, low back pain, muscular atrophy of the lower limbs, difficult urination, constipation.

Clinical notes

BL54 is a powerful point for activating blood, alleviating pain, and benefiting urination, making it a cornerstone for lower back, sacral, and hip pain. It is widely used for sciatica, piriformis syndrome, and pain radiating down the leg. Its ability to regulate the lower jiao also makes it effective for difficult urination and hemorrhoids, often paired with GB30 for sciatica.

On the Bladder channel

BL54 is one of 67 points on the Bladder Meridian. Nearby points:

Frequently asked questions

Where is BL54 located?

BL54 (Zhibian) is located on the sacrum, 3 cun lateral to the median sacral crest, at the level of the 4th sacral foramen.

What is BL54 used for?

BL54 activates blood, alleviates pain, and benefits urination. Common clinical indications include sciatica, low back pain, muscular atrophy of the lower limbs, difficult urination, constipation.

How is BL54 needled?

Perpendicular insertion 1.0-1.5 cun. Caution for sacral nerves.

Which meridian is BL54 on?

BL54 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.