REN1 Huiyin

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

REN1 (Huiyin, “Huiyin”) is the Ghost Point point of the Conception Vessel Meridian. It is located in the center of the perineum, midway between the anus and the posterior aspect of the scrotum in males, or the posterior labial commissure in females. It regulates the Ren, Du, and Chong meridians, clears damp-heat from the lower jiao, calms the spirit, and revives from collapse.

Location

In the center of the perineum, midway between the anus and the posterior aspect of the scrotum in males, or the posterior labial commissure in females.

Needling

Perpendicular insertion 0.5 to 1.0 cun. In males, the point is located between the anus and the root of the scrotum. In females, it is between the anus and the posterior labial commissure.

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TCM functions

Regulates the Ren, Du, and Chong meridians, clears damp-heat from the lower jiao, calms the spirit, and revives from collapse..

Indications

Hemorrhoids, itching of the genitals or anus, pain in the genitals, amenorrhea, vaginal swelling and pain, difficulty with urination and defecation, pain radiating between the genitals and anus, cold sensation at the tip of the penis, drowning, sudden death, epilepsy, mania..

Ghost Point

Clinical notes

Huiyin is a critical point for emergencies like drowning, coma, and shock, functioning as a powerful resuscitation point. It is also a primary local point for a wide range of genitourinary and anorectal disorders, including hemorrhoids, prostatitis, and genital itching or pain. As a 'Ghost Point,' it has applications for severe psychiatric conditions like mania and epilepsy, particularly when they present with lower body symptoms.

On the Conception Vessel channel

REN1 is one of 24 points on the Conception Vessel Meridian. Nearby points:

REN2REN3REN4REN5REN6REN7REN8REN9

Frequently asked questions

Where is REN1 located?

REN1 (Huiyin) is located in the center of the perineum, midway between the anus and the posterior aspect of the scrotum in males, or the posterior labial commissure in females.

What is REN1 used for?

REN1 regulates the Ren, Du, and Chong meridians, clears damp-heat from the lower jiao, calms the spirit, and revives from collapse. Common clinical indications include hemorrhoids, itching of the genitals or anus, pain in the genitals, amenorrhea, vaginal swelling and pain, difficulty with urination and defecation, pain radiating between the genitals and anus, cold sensation at the tip of the penis, drowning, sudden death, epilepsy, mania.

How is REN1 needled?

Perpendicular insertion 0.5 to 1.0 cun. In males, the point is located between the anus and the root of the scrotum. In females, it is between the anus and the posterior labial commissure. Caution: The Qian Jin Yao Fang states that for hemorrhoids that have created a fistula connecting to the genitals, the condition is fatal. The Zhen Jiu Ju Ying warns against needling for any condition other than resuscitation from drowning or sudden death.

Which meridian is REN1 on?

REN1 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.