DU28 Gum Intersection

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

DU28 (Yinjiao, “Gum Intersection”) is an acupuncture point on the Governing Vessel Meridian. DU28 is located inside the mouth, on the frenulum of the upper lip, at the junction of the gum and the upper lip. It benefits the mouth and gums, clears heat, alleviates pain.

Location

DU28 is located inside the mouth, on the frenulum of the upper lip, at the junction of the gum and the upper lip.

Needling

Insert obliquely 0.1-0.2 cun. Do not needle deeply.

TCM functions

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

Indications

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

Clinical notes

DU28 is a highly effective local point for clearing heat and alleviating pain in the mouth and gums, particularly for conditions like gingivitis, periodontitis, and toothache affecting the upper jaw. Its location at the gum intersection makes it specific for oral cavity issues. It is often needled towards DU27 for comprehensive treatment of upper lip and gum problems.

On the Governing Vessel channel

DU28 is one of 28 points on the Governing Vessel Meridian. Nearby points:

Frequently asked questions

Where is DU28 located?

DU28 is located inside the mouth, on the frenulum of the upper lip, at the junction of the gum and the upper lip.

What is DU28 used for?

DU28 benefits the mouth and gums, clears heat, alleviates pain. Common clinical indications include swelling and pain of the gums, halitosis, facial paralysis.

How is DU28 needled?

Insert obliquely 0.1-0.2 cun. Do not needle deeply.

Which meridian is DU28 on?

DU28 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.