DU27 Extremity of the Mouth

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

DU27 (Duiduan, “Extremity of the Mouth”) is an acupuncture point on the Governing Vessel Meridian. DU27 is located on the upper lip, at the junction of the philtrum and the labial tubercle. It benefits the mouth and gums, clears heat, alleviates pain.

Location

DU27 is located on the upper lip, at the junction of the philtrum and the labial tubercle.

Needling

Insert obliquely upwards 0.2-0.3 cun. Do not needle deeply.

⚠ Direct/scarring moxa traditionally avoided here (face / sensory organ — scar & burn risk).

TCM functions

Benefits the mouth and gums, clears heat, alleviates pain.

Indications

Swelling and pain of the gums, halitosis, facial paralysis.

Clinical notes

DU27 is a key local point for disorders of the mouth and gums, especially those involving heat, such as gingivitis, toothache, and mouth ulcers. It effectively clears heat and alleviates pain in the oral cavity. Clinically, it is often used for issues affecting the upper lip and frenulum, and can be combined with ST44 for severe toothache.

On the Governing Vessel channel

DU27 is one of 28 points on the Governing Vessel Meridian. Nearby points:

Frequently asked questions

Where is DU27 located?

DU27 is located on the upper lip, at the junction of the philtrum and the labial tubercle.

What is DU27 used for?

DU27 benefits the mouth and gums, clears heat, alleviates pain. Common clinical indications include swelling and pain of the gums, halitosis, facial paralysis.

How is DU27 needled?

Insert obliquely upwards 0.2-0.3 cun. Do not needle deeply. Caution: ⚠ Direct/scarring moxa traditionally avoided here (face / sensory organ — scar & burn risk).

Which meridian is DU27 on?

DU27 is a point on the Governing Vessel Meridian (Dū Mài).

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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.