LR4 Middle Seal

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

LR4 (Zhōng Fēng, “Middle Seal”) is the Jing-River (Metal) point of the Liver Channel of Foot Jueyin Meridian. It is located on the dorsum of the foot, 1 cun anterior to the medial malleolus, in the depression medial to the tendon of tibialis anterior. It spreads Liver Qi, regulates Qi, clears damp-heat.

Location

On the dorsum of the foot, 1 cun anterior to the medial malleolus, in the depression medial to the tendon of tibialis anterior.

Needling

Perpendicular insertion 0.5-0.8 cun.

TCM functions

Spreads Liver Qi, regulates Qi, clears damp-heat.

Indications

Hernia, pain in the external genitalia, painful urination, lower back pain.

Jing-River (Metal)

Clinical notes

As the Jing-River and Metal point of the Liver, LR4 is primarily used to spread Liver Qi and regulate Qi flow in the lower jiao, particularly addressing issues along the Liver channel. It is effective for conditions like hernia, urinary dysfunction, and pain in the medial aspect of the leg. It also has a secondary action in clearing damp-heat from the lower burner.

On the Liver Channel of Foot Jueyin channel

LR4 is one of 14 points on the Liver Channel of Foot Jueyin Meridian. Nearby points:

Frequently asked questions

Where is LR4 located?

LR4 (Zhōng Fēng) is located on the dorsum of the foot, 1 cun anterior to the medial malleolus, in the depression medial to the tendon of tibialis anterior.

What is LR4 used for?

LR4 spreads Liver Qi, regulates Qi, clears damp-heat. Common clinical indications include hernia, pain in the external genitalia, painful urination, lower back pain.

How is LR4 needled?

Perpendicular insertion 0.5-0.8 cun.

Which meridian is LR4 on?

LR4 is a point on the Liver Channel of Foot Jueyin Meridian (Zú Juéyīn Gānjīng).

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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.