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Home > Education > Acupuncture Point Location > Urinary Bladder Meridian > UB 22

Urinary Bladder 22

Chinese Name: Sanjiaoshu (English translation: San Jiao Shu)

Location:  On the back, 1.5 cun lateral to the lower border of the spinous process of the 1st lumbar vertebra.

Classification: Back-Shu point of the San Jiao


  • Edema, dysuria
  • Abdominal distention, borborygmus, diarrhea, dysentery
  • Weak knees

Functions: Regulates and and moves the San Jiao, opens and regulates water passages, benefits urination, resolves Dampness.

Notes: Back-Shu points are corresponding points on the back where the Qi of the respective Zang-Fu organ is infused. If the Five Zang organs are diseased, abnormal reactions appear on the Back-Shu points. Back-Shu points have a direct therapeutic effect on the diseases of the Five Zang organs. For more complete information on Back-Shu and Front-Mu points, click here.

Needling: Perpendicular insertion .5 - 1.0 cun.


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