SP-6 Sanyinjiao
SP-6 Sanyinjiao (三陰交) is a point on the Spleen meridian. In TCM theory it is described as influencing the channel's qi, and it is traditionally used in the context of the whole pattern rather than as a stand-alone remedy. This page explains how to locate it, what the tradition says about it, and how to press it safely.
Location
Three cun above the medial malleolus, on the posterior border of the tibia.
How to find it
Place four fingers above the inner ankle bone, with the little finger on the bone. The point is just behind the shin bone, in the soft hollow.
Traditional functions
- Meeting point of the Spleen, Liver, and Kidney meridians
- Nourishes blood and yin
- Regulates menstruation and digestion
Traditional uses
- Digestive weakness and bloating
- Menstrual and gynecological patterns in traditional practice
- Sleep disturbance
- Fatigue and dryness
How to press it
Press gently for 1–2 minutes on each leg. The point can be sensitive; use slow, steady pressure.
Acupressure is generally a gentle practice. Use the pad of the thumb or finger, start with light pressure, and increase only to a comfortable level. A mild ache or warmth is common; sharp pain is a signal to ease off.
Safety
Strong pressure at SP-6 is traditionally avoided during pregnancy. Avoid pressing over varicose veins or inflamed skin.
How this is viewed today
SP-6 is among the most studied points in acupuncture research, particularly for gynecological and digestive symptoms. Reviews report mixed quality and call for larger trials.
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: Spleen meridian · Acupoint library · SP-9 Yinlingquan · SP-10 Xuehai · ST-36 Zusanli · all twelve meridians