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Sanyinjiao(SP6, 三阴交) is an acupuncture point in the meridian named Taiyin Spleen Meridian of Foot. It is Contraindicated using during pregnancy.


Sanyin, three Yin meridians; jiao, crossing.
This is an intersecting point of the Spleen, Liver and Kidney Meridians.


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


  1. main point for gastro-intestinal diseases, often used with ZuSanli.
  2. main point for diseases of urinary system, such as retention of urine, edema, enuresis, etc.
  3. main point for diseases of genital system, such as impotence, spermatorrhea, amenorrhea, dysmenorrhea, vaginal discharge, etc.
  4. used to induce sedation and tranquilization by lowering the blood pressure.
  5. to treat pains and paralysis of the lower extremities, especially suitable for strephexopodia.
  6. the important point for anaesthesia on the lower part of the abdomen.


Perpendicularly 1-1.5 cun.