REN6 Sea of Qi

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

REN6 (Qihai, “Sea of Qi”) is an acupuncture point on the Conception Vessel Meridian. It is located on the anterior midline, 1.5 cun inferior to the umbilicus. It tonifies qi, strengthens the kidneys, and regulates menstruation.

Location

On the anterior midline, 1.5 cun inferior to the umbilicus.

Needling

Insert perpendicularly 0.8-1.2 cun.

TCM functions

Tonifies qi, strengthens the kidneys, and regulates menstruation.

Indications

Abdominal pain, diarrhea, enuresis, seminal emission, impotence, hernia, irregular menstruation, morbid leukorrhea, postpartum hemorrhage, collapse.

Clinical notes

Ren 6, known as the 'Sea of Qi,' is a profoundly tonifying point for all forms of qi deficiency, making it essential for fatigue, prolapse, and general weakness. It strengthens the Kidneys and regulates menstruation, making it valuable for gynecological issues and male reproductive disorders. It is frequently moxaed to warm the yang, invigorate qi, and consolidate the body's vital energy, often paired with ST36 for overall qi tonification.

On the Conception Vessel channel

REN6 is one of 24 points on the Conception Vessel Meridian. Nearby points:

Frequently asked questions

Where is REN6 located?

REN6 (Qihai) is located on the anterior midline, 1.5 cun inferior to the umbilicus.

What is REN6 used for?

REN6 tonifies qi, strengthens the kidneys, and regulates menstruation. Common clinical indications include abdominal pain, diarrhea, enuresis, seminal emission, impotence, hernia, irregular menstruation, morbid leukorrhea, postpartum hemorrhage, collapse.

How is REN6 needled?

Insert perpendicularly 0.8-1.2 cun.

Which meridian is REN6 on?

REN6 is a point on the Conception Vessel Meridian (Rèn 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.