Kidney Meridian
Stores essence (精) — the body's deepest reserve in TCM theory.
Pathway
The Kidney meridian begins at the sole of the foot at KI-1 Yongquan, runs along the medial arch, behind the medial malleolus, and up the medial side of the leg. It enters the spine, internally connects with the kidney and bladder, and from there ascends the abdomen and chest.
A branch passes through the diaphragm and lung, ascends the throat, and ends at the root of the tongue. The tradition treats the kidney as the body's deepest reserve, the source of inherited constitution.
Role in TCM theory
- Storing essence (藏精) — The kidney is said to store jing (精), the constitutional essence governing growth, reproduction, and aging.
- Governing water (水臟) — The kidney is described as the "official of water", coordinating fluid metabolism with the bladder.
- Grasping qi (納氣) — The kidney is said to "grasp" qi sent down by the lung, a partnership invoked in breathing patterns.
- Water pair with the Bladder — Kidney and bladder share the Water element and are described as interior–exterior partners.
Common acupoints on the Kidney meridian
| Point | Name | Location | Traditional use |
|---|---|---|---|
| KI-1 | Yongquan (湧泉) | On the sole, in the depression at the junction of the anterior third and posterior two-thirds of the foot | The jing-well point; traditionally used as a grounding point |
| KI-3 | Taixi (太谿) | In the depression between the medial malleolus and the Achilles tendon | The shu-stream and yuan-source point; classically used to support kidney qi |
| KI-6 | Zhaohai (照海) | One cun below the medial malleolus | One of the eight confluent points; traditionally associated with sleep and the throat |
| KI-7 | Fuliu (復溜) | Two cun above KI-3, on the anterior border of the Achilles tendon | The jing-river point; traditionally associated with sweating and fluids |
Point locations follow the WHO Standard Acupuncture Nomenclature (1991). Gentle acupressure is generally considered low-risk; needling must only be performed by a licensed practitioner.
The 5–7 pm window
5–7 pm is the kidney's peak. Traditional routines emphasize winding down, a warm evening meal, and avoiding overexertion as the day closes.
How this is viewed today
Kidney-related acupuncture research often focuses on pain, fatigue, and quality of life rather than kidney function itself. No form of acupressure substitutes for medical evaluation of kidney or urinary symptoms.
Sources & further reading
- Huangdi Neijing (黃帝內經), c. 2nd century BCE.
- Nanjing (難經), c. 1st–2nd century CE.
- World Health Organization, Standard Acupuncture Nomenclature, 2nd ed., 1991.
- Deadman P, Al-Khafaji M, Baker K. A Manual of Acupuncture. Journal of Chinese Medicine Publications.
- National Center for Complementary and Integrative Health, Acupuncture: What You Need To Know.
Related: Bladder meridian · Yin Deficiency constitution · Yang Deficiency constitution · all twelve meridians