KI4 Great Bell

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

KI4 (Dazhong, “Great Bell”) is the Luo-connecting point of the Kidney Channel Meridian. It is located on the medial aspect of the ankle, inferior to KI3, in the depression anterior to the medial attachment of the Achilles tendon. It strengthens the Kidneys, regulates the lower jiao, calms the spirit.

Location

On the medial aspect of the ankle, inferior to KI3, in the depression anterior to the medial attachment of the Achilles tendon.

Needling

Perpendicular insertion 0.3-0.5 cun.

TCM functions

Strengthens the Kidneys, regulates the lower jiao, calms the spirit.

Indications

Urinary retention, hernia, lumbar pain, impotence, mental disorders.

Luo-connecting

Clinical notes

As the Luo-connecting point of the Kidney meridian, KI4 connects to the Bladder meridian and is vital for strengthening the Kidneys and regulating the lower jiao, particularly for urinary and reproductive disorders. It is also known for its strong effect on calming the spirit, addressing fear, anxiety, and mental restlessness, especially when rooted in Kidney deficiency. KI4 is empirically used for heel pain and chronic constipation due to Kidney deficiency.

On the Kidney Channel channel

KI4 is one of 27 points on the Kidney Channel Meridian. Nearby points:

Frequently asked questions

Where is KI4 located?

KI4 (Dazhong) is located on the medial aspect of the ankle, inferior to KI3, in the depression anterior to the medial attachment of the Achilles tendon.

What is KI4 used for?

KI4 strengthens the Kidneys, regulates the lower jiao, calms the spirit. Common clinical indications include urinary retention, hernia, lumbar pain, impotence, mental disorders.

How is KI4 needled?

Perpendicular insertion 0.3-0.5 cun.

Which meridian is KI4 on?

KI4 is a point on the Kidney Channel Meridian (Zú Shàoyīn Shènjīng).

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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.