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Neijing

Knowledge baseAcupuncture points

SP-6

San Yin Jiao三陰交

Three Yin Intersection

Channel
Spleen
Classification
Crossing

Location

Three cun above the tip of the medial malleolus, on the posterior border of the tibia.

Needling

Perpendicular insertion 0.5–1 cun.

Actions

  • Strengthens the spleen and resolves dampness
  • Harmonizes the liver and tonifies the kidneys
  • Regulates menstruation and the lower burner
  • Calms the spirit

Indications

Menstrual irregularity and period pain, infertility, difficult or frequent urination, abdominal distension, loose stools, insomnia.

Cautions

Contraindicated in pregnancy.

Notes

The meeting point of the spleen, liver and kidney channels, which is why one needle here reaches all three.