A quiet but powerful point on the lower abdomen, Qixue (KI-13) is where the Kidney channel meets the great Penetrating Vessel (Chong Mai) — a crossroads of essence, fertility and deep vitality. It tonifies the Kidneys, nourishes the Uterus, and keeps the body's most fundamental currents flowing.
Meridian
Kidney channel
Pinyin name
Qixue
Contraindications
KI-13 is a point on the lower abdomen and should be needled with appropriate care in that region. As with all lower abdominal points, caution is warranted during pregnancy.
Name & story
The name 气穴 Qixue means "Qi Hole" — a fitting image for a place where Qi gathers and pools in the lower abdomen like water collecting in a hollow in the earth. It is a point through which the Kidney-Essence surfaces and can be reached, a small opening into the body's deepest reserves. Some classical texts note that "穴" (xue, hole or cave) also evokes the idea of a dwelling place — and here, in the lowest part of the abdomen, close to Ren-4 (Guanyuan), the Jing and Qi of the Kidneys make their home.
Point family & character
Qixue (KI-13) belongs to the Kidney Meridian (KI). Its special character comes from two memberships: it is a point of the Penetrating Vessel (Chong Mai), the "Sea of Blood" that governs menstruation and reproduction; and it is a meeting point of the Liver and Spleen channels. This triple convergence gives it an unusually broad reach — Kidneys, Blood, reproduction and digestion all come within its influence.
Five-element dynamics
The Kidneys belong to the Water element, the root of Yin and Yang in the body, the storehouse of Jing. The Penetrating Vessel (Chong Mai) is called the "Sea of Blood" — it carries the Kidney-Essence outward and gives it form as Blood and reproductive vitality. KI-13 sits at the meeting of these two currents: the deep Kidney-Jing and the flowing Chong Mai. When that sea is depleted — through overwork, age, or loss of Blood — this point is one of the places where it can be replenished and steadied. At the same time, because the Liver and Spleen channels also converge here, KI-13 can both move and nourish, acting on stagnation as well as deficiency.
Location
KI-13 is found on the lower abdomen, 3 Cun below the centre of the navel (umbilicus) and 0.5 Cun to either side of the anterior midline. It lies at the same level as Ren-4 (Guanyuan), but shifted just half a Cun off the midline toward the Kidney channel.
Anatomy & fascia
The point lies on the lower abdomen, in the region of the rectus abdominis muscle.
Needling
The needle is inserted perpendicularly.
Moxa, cupping & Tui Na
The golden tip
The lower abdomen responds well to gentle warmth. If you are experiencing lower back weakness, menstrual irregularity, or general Kidney fatigue, placing a warm compress or a hot water bottle over the lower abdomen — in the region of KI-13 and Ren-4 — for 10–15 minutes can be soothing and supportive. Gentle self-massage of the lower abdomen in slow circular motions is another simple way to encourage Qi and Blood (Xue) circulation in this area. Always work gently, especially around the time of menstruation.
For education only — not medical advice. Consult a qualified practitioner.
Moxa is well suited to this point, especially when the clinical picture involves Cold, Yang Deficiency, or reproductive deficiency — warming the lower abdomen, supporting the Uterus and boosting the Kidneys' warming function. Gentle moxibustion over the lower abdomen (KI-13 together with Ren-4) is a classical approach for cold-type infertility or menstrual irregularity with deficiency.
Functions
Tonifies the Kidneys and Essence (Jing). Strengthens the Uterus and consolidates the Penetrating Vessel (Chong Mai) and Directing Vessel (Ren Mai). Moves Qi and Blood (Xue). Regulates the two lower orifices (urethra and anus). Clears Heat.
Indications
Reproductive and gynaecological conditions: amenorrhoea, irregular periods, excessive menstrual bleeding, infertility, impotence. Kidney deficiency signs: backache, tinnitus, deafness, weak knees. Abdominal pain and Running Piglet Syndrome (a sensation of Qi rushing upward from the lower abdomen). Urinary difficulty, turbid urine. Diarrhoea. Redness of the inner corners of the eyes.
Mind & spirit (Shen)
The lower abdomen — the area around KI-13 — is considered in Chinese medicine to be the home of the Zhi, the Kidney's mental aspect: the will, the drive, the quiet determination that keeps a person moving forward. When the Kidneys are depleted and the Chong Mai is unsettled, a person may feel unmoored, anxious without clear cause, or deeply fatigued in spirit as well as body. Running Piglet Syndrome, one of the indications of this point, has a notable emotional dimension: the sensation of Qi rushing wildly upward from the lower abdomen is classically associated with fear and agitation. By anchoring the Kidney-Jing and steadying the Chong Mai, KI-13 helps bring that restless upward surge back down — and with it, a sense of groundedness and calm.
Point combinations
With Ren-4 (Guanyuan) — to powerfully tonify the Kidneys and Essence and support the Uterus, especially in infertility or menstrual irregularity. With KI-3 (Taixi) — to reinforce Kidney tonification from both the channel's source point and this Chong Mai meeting point. With SP-6 (Sanyinjiao) — drawing on the Liver-Spleen-Kidney connection, for gynaecological conditions involving Blood Deficiency or irregular periods. With Ren-3 (Zhongji) — for urinary difficulty.
Clinical spotlight
What makes KI-13 clinically interesting is Maciocia's observation that it has a dual function — both to tonify and to reduce. On the tonifying side, its location level with Ren-4 and its role as a Chong Mai point make it one of the stronger points for replenishing Kidney-Essence and supporting the Uterus — useful in infertility, amenorrhoea, and chronic deficiency. On the reducing side, it can move Qi and Blood (Xue) and clear Heat, making it relevant even when stagnation or Heat is part of the picture. Few points on the lower abdomen carry this flexibility. Its meeting with the Liver and Spleen channels adds further reach: it can address the interplay of Kidney deficiency with Liver Qi Stagnation or Spleen weakness that so often underlies gynaecological conditions in clinical practice.