KI21 Dark Gate

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

KI21 (Yōumén, “Dark Gate”) is an acupuncture point on the Kidney Channel Meridian. It is located on the anterior midline of the abdomen, 7 cun superior to the umbilicus, 0.5 cun lateral to the anterior midline. It regulates qi, harmonizes middle jiao, alleviates pain.

Location

On the anterior midline of the abdomen, 7 cun superior to the umbilicus, 0.5 cun lateral to the anterior midline.

Needling

Perpendicular insertion 0.5-1.5 cun. Caution for pneumothorax.

⚠ Pneumothorax risk: oblique/shallow only, never deep perpendicular over the chest wall.

TCM functions

Regulates qi, harmonizes middle jiao, alleviates pain.

Indications

Abdominal pain, vomiting, indigestion, chest oppression.

Clinical notes

KI21, 'Dark Gate', is a significant point for regulating qi and harmonizing the Middle Jiao, especially when emotional factors contribute to digestive issues. It is highly effective for epigastric pain, vomiting, acid reflux, and abdominal distention, particularly when accompanied by anxiety or stress. Its name implies its ability to access and regulate deeper, often emotionally-rooted, imbalances. Pairing with PC6 can enhance its effect on nausea and emotional distress.

On the Kidney Channel channel

KI21 is one of 27 points on the Kidney Channel Meridian. Nearby points:

Frequently asked questions

Where is KI21 located?

KI21 (Yōumén) is located on the anterior midline of the abdomen, 7 cun superior to the umbilicus, 0.5 cun lateral to the anterior midline.

What is KI21 used for?

KI21 regulates qi, harmonizes middle jiao, alleviates pain. Common clinical indications include abdominal pain, vomiting, indigestion, chest oppression.

How is KI21 needled?

Perpendicular insertion 0.5-1.5 cun. Caution for pneumothorax. Caution: ⚠ Pneumothorax risk: oblique/shallow only, never deep perpendicular over the chest wall.

Which meridian is KI21 on?

KI21 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.