BL46 Geguan

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

BL46 (Geguan, “Geguan”) is an acupuncture point on the Bladder Meridian. It is located on the upper back, 3 cun lateral to the lower border of the spinous process of the seventh thoracic vertebra (T7), level with BL17 (Geshu). It strengthens the spine, expels cold from the back, and alleviates pain and stiffness.

Location

On the upper back, 3 cun lateral to the lower border of the spinous process of the seventh thoracic vertebra (T7), level with BL17 (Geshu).

Needling

Oblique insertion towards the spine, 0.5 to 1.0 cun. Deep perpendicular or medial oblique insertion carries a risk of pneumothorax.

TCM functions

Strengthens the spine, expels cold from the back, and alleviates pain and stiffness..

Indications

Stiffness and rigidity of the lumbar spine and back, aversion to cold and pain in the back, spinal rigidity with difficulty bending forward and backward..

Clinical notes

Geguan is a point on the outer Bladder line, level with the influential point of Blood, Geshu (BL17). While its classical indications focus on spinal rigidity and back pain, its name 'Diaphragm Gate' suggests a relationship with the diaphragm and middle jiao. Clinically, it can be used as a local point for musculoskeletal pain and stiffness in the upper and middle back, especially when there is a component of cold.

On the Bladder channel

BL46 is one of 67 points on the Bladder Meridian. Nearby points:

Frequently asked questions

Where is BL46 located?

BL46 (Geguan) is located on the upper back, 3 cun lateral to the lower border of the spinous process of the seventh thoracic vertebra (T7), level with BL17 (Geshu).

What is BL46 used for?

BL46 strengthens the spine, expels cold from the back, and alleviates pain and stiffness. Common clinical indications include stiffness and rigidity of the lumbar spine and back, aversion to cold and pain in the back, spinal rigidity with difficulty bending forward and backward.

How is BL46 needled?

Oblique insertion towards the spine, 0.5 to 1.0 cun. Deep perpendicular or medial oblique insertion carries a risk of pneumothorax.

Which meridian is BL46 on?

BL46 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.