REN-07 (Yin Jiao) Yin Intersection

What does REN-07 Yin Jiao do?

REN-07 regulates menstruation and benefits the lower abdomen and genital region — a lower-midline point where three channels of the interior meet.

• Regulates menstruation — the gynaecological action, behind its use for irregular periods and uterine bleeding
• Benefits the lower abdomen and genital region — the local lower-jiao action

A three-way meeting point. Our record classifies REN-07 as a Meeting Point of the Conception (Ren) and Penetrating (Chong) vessels and the Kidney channel — three of the pathways most central to reproduction and menstruation converging on one lower-abdominal point. The Ren governs the uterus, the Chong is the “sea of blood”, and the Kidney governs reproduction; their meeting is the classical account of why REN-07 is a gynaecological point.

A name collision to flag. There are two points called Yin Jiao in our data, and they are entirely different: REN-07 Yin Jiao, Yin Intersection, here on the lower abdomen — and DU-28 Yin Jiao, Gum Intersection, inside the upper lip on the gum. Same pinyin (“Yin Jiao”), different Chinese characters, opposite ends of the body. Our library documents this among the genuine point-name collisions; a reference to “Yin Jiao” must say which. (Our neighbouring KI-15 Zhong Zhu record, which uses REN-07 as its own landmark, notes the same.)

On the name. “Yin Jiao” here means Yin Intersection — yin the yin, jiao to cross or intersect — the crossing of the yin pathways (Ren, Chong, Kidney) at this point.

Source: Sacred Lotus sources & references (channel, classification, action and translation records; both Yin Jiao points — REN-07 and DU-28 — and the three-way meeting classification queried against our own data), cross-referenced against multiple online sources.

What is REN-07 Yin Jiao used for?

REN-07 is used for abdominal distension, edema, hernia, irregular menstruation, uterine bleeding, abnormal vaginal discharge, vulval itching, postpartum haemorrhage, and pain around the navel. Our own indication record is reproduced here in full.

• Abdominal distension and pain around the umbilicus
• Edema and hernia
• Irregular menstruation and uterine bleeding
• Morbid leucorrhoea (abnormal vaginal discharge) and pruritus vulvae (vulval itching)
• Postpartum haemorrhage

Lower abdomen and the reproductive region. The distension, edema, hernia and peri-umbilical pain are the local lower-jiao action; the menstrual, discharge, itching and postpartum entries are the gynaecological action of a three-vessel reproductive meeting point.

An honest note. Abnormal or heavy uterine bleeding, and any postpartum haemorrhage, require urgent medical assessment — postpartum haemorrhage is life-threatening. Abnormal vaginal discharge and vulval itching require assessment — infection is a common, treatable cause. Edema requires assessment. This record documents classical use only.

How it is combined. With REN-04 Guan Yuan and REN-06 Qi Hai on the midline and SP-06 San Yin Jiao for the gynaecological indications. All held here.

Source: Sacred Lotus sources & references (indication and action records; the REN-04, REN-06 and SP-06 records queried from our own data), cross-referenced against multiple online sources.

Where is REN-07 Yin Jiao located?

REN-07 is on the midline of the lower abdomen, one cun below the navel.

• On the anterior midline
• 1 cun below the umbilicus (navel)
• Just below REN-08 Shen Que (at the navel itself) and above REN-06 Qi Hai (1.5 cun below)

Close under the navel. REN-07 sits one cun below the navel on the midline — the navel (REN-08) being an unmistakable landmark. The lower-midline points are spaced down from it by measurement. Our KI-15 Zhong Zhu sits half a cun to the side of REN-07, using it as its own reference.

On the name. “Yin Jiao” — Yin Intersection, and not to be confused with DU-28 Yin Jiao (Gum Intersection) in the mouth, as noted above.

Source: Sacred Lotus sources & references (location and translation records, retained unchanged; the REN-06, REN-08 and KI-15 records queried from our own data).

• A Manual of Acupuncture (p. 506): On the midline of the lower abdomen, 1 cun inferior to the umbilicus and 4 cun superior to the pubic symphysis.
• Chinese Acupuncture and Moxibustion (p. 237): On the anterior midline, 1 cun below the umbilicus.

How is REN-07 Yin Jiao needled, and what cautions apply?

Our own record states perpendicular insertion of 0.8–1.2 inches, with moxibustion applicable — and it carries an explicit pregnancy caution. What follows is a neutral record of what the reference literature documents. It is not instruction, and this page does not teach technique.

• Angle and depth as recorded: perpendicular, 0.8–1.2 inches.
• Moxibustion: recorded as applicable.
• Pregnancy caution (recorded verbatim): “great care should be taken to puncture the points from Qugu (REN-02) to Shangwan (REN-13) in pregnant women” — REN-07 lies within that lower-and-middle abdominal run.
• Regional anatomy: the point overlies the lower abdominal wall on the midline; deep to it lie the small intestine, the bladder when full, and in pregnancy the uterus.

Hazard, stated plainly. The consideration is the organs beneath — bladder, bowel, and the uterus in pregnancy; the bladder is emptied before needling, and the recorded pregnancy caution is followed. Our record carries no arterial caution at REN-07, and it is not among the nine points that do. A practitioner’s point.

What is not claimed. No study measuring a safe depth at REN-07 could be located, and none is borrowed; the empty-bladder and pregnancy cautions stand in its place. No case report naming REN-07 was located.

Source: Sacred Lotus sources & references (needling record, retained unchanged including the pregnancy caution; the nine arterial cautions queried from our own data), cross-referenced against multiple online sources; regional anatomy from standard anatomical description.

Is there research on REN-07, and what should a reader know?

No trial isolates REN-07. Where the point appears it is one component of a gynaecological protocol, and a study that includes a point in a protocol is not evidence about that point.

What this page can state with confidence. REN-07 Yin Jiao (“Yin Intersection”) is a lower-midline point and a Meeting Point of the Conception and Penetrating vessels and the Kidney channel — three reproduction-central pathways — which is why it regulates menstruation and benefits the genital region. It sits 1 cun below the navel and carries the recorded pregnancy caution. It is one half of a genuine name collision: REN-07 Yin Jiao (Yin Intersection, abdomen) is a different point from DU-28 Yin Jiao (Gum Intersection, mouth).

A note on searching for it. “REN 7”, “CV 7” and “Yinjiao” searches are actively ambiguous — “Yin Jiao” names two different acupuncture points (REN-07 and DU-28). Any claim attached to “Yin Jiao” must be checked against which of the two a source means.

Source: Sacred Lotus sources & references (classification, action, indication and location records; both Yin Jiao points and the three-way meeting classification queried, against our own data).