LU5 Cubital Marsh

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

LU5 (Chize, “Cubital Marsh”) is the He-Sea (Water) point of the Lung Channel of Hand Taiyin Meridian. LU5 is at the cubital crease, on the radial side of the biceps brachii tendon. It clears Lung heat, descends rebellious Qi, relaxes sinews.

Location

LU5 is at the cubital crease, on the radial side of the biceps brachii tendon.

Needling

Perpendicular insertion 0.5-1 cun, or prick to bleed.

TCM functions

Clears Lung heat, descends rebellious Qi, relaxes sinews.

Indications

Cough, asthma, sore throat, elbow pain, hemoptysis.

He-Sea (Water)

Clinical notes

As the He-Sea (Water) point, LU5 is crucial for clearing Lung heat, especially from the Lung and Stomach, making it effective for cough, asthma, and rebellious Qi. It is also a powerful point for relaxing sinews and treating elbow pain, particularly tennis elbow. Its 'water' element connection makes it useful for damp-heat conditions affecting the Lung. It is a classic point for treating cough with yellow phlegm and heat in the chest.

On the Lung Channel of Hand Taiyin channel

LU5 is one of 11 points on the Lung Channel of Hand Taiyin Meridian. Nearby points:

Frequently asked questions

Where is LU5 located?

LU5 is at the cubital crease, on the radial side of the biceps brachii tendon.

What is LU5 used for?

LU5 clears Lung heat, descends rebellious Qi, relaxes sinews. Common clinical indications include cough, asthma, sore throat, elbow pain, hemoptysis.

How is LU5 needled?

Perpendicular insertion 0.5-1 cun, or prick to bleed.

Which meridian is LU5 on?

LU5 is a point on the Lung Channel of Hand Taiyin Meridian (Shǒu Tàiyīn Fèijīng).

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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.