Acupuncture Point: Small Intestine 3 (SI 3) 4.94/5 (70)

Small Intestine 3 (SI 3) is the gateway acupuncture point leading to the spine by way of the shoulders, neck and scapula. Often this point is combined with Bladder 62, which opens the spine from the direction of the coccyx and the lumbar spine. The two points used together make a beautiful team.

Internally this acupuncture channel crosses the heart and the intestines, which makes Small Intestine 3 a helpful point for palpitations, heart conditions, bloating, gas, constipation, and diarrhea.

Learn more about Small Intestine 3 in the description below!


The following information is from the Points Acupuncture Reference Software:

Small Intestine 3 Info and Description  

Acupuncture Point SI 3

Acupuncture Point: Small Intestine 3 (SI 3, SI3)

Chinese Name: Hou Xi

English Name: Back Stream

Location: When the fist is half closed, in a depression proximal to the head of the metacarpal bone, at the junction of the light and dark skin.

Attributes: Shu-Stream, Tonification, and Wood point of the Small Intestine channel. Confluent point and master point of the Governing Vessel. Command point of the Yang Linking vessel.


TCM Actions: Clears the spirit-disposition; dispels interior heat; frees the governing vessel; secures the exterior.

Indications: Headache; stiff neck; reddening of the eyes; deafness; hypertonicity of the elbow, arm, and fingers; heat diseases; epilepsy; malarial disease; night sweating.

Secondary Indications: Cardiac pain; dark-colored urine; mania and withdrawal; headache and neck pain; gastric reflux.

Needle Information: Perpendicular insertion .5 – .7 cun. Moxibustion is applicable.

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Found This Information Helpful?

If you found this information helpful, you’ll love my free guide called 10 Powerful Acupuncture Points and Protocols to use in Treatment.

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The PDF has information about…

  • Spleen 6
  • Gallbladder 34
  • Liver 3
  • Large Intestine 4
  • Pericardium 6
  • Yin Tang
  • Conception Vessel 6
  • Cough Protocol
  • Anxiety Protocol
  • Immune Function Protocol

Points Interactive Reference Software

All of the information in this blog post, and in the free guide, comes from the Points Interactive Acupuncture Software.

Watch a short demo of Points Software below!

Points Software, with…

  • 405 Named and Numbered Points on the Body
  • 14 Main Channel Graphic Images
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  • 12 Main Channel Internal Pathway Images
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  • 11 Charts
  • Graphic Images of all points
  • Complete reference for all meridian systems
  • Fully customizable quiz feature to enhance your self study and acupuncture mastery

…is the ULTIMATE REFERENCE for everything you need to know about any point.

Plus, it works incredibly well to help your remote patients find acupuncture points. Simply send them a screenshot, and they’re off to the races!

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I hope this blog post, my free guide, and Points Interactive Acupuncture Software are helpful for you in your journey of health and helping others! Feel free to reach out with any questions; my staff is extremely quick to respond!

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Kind Regards,

-Dr. Adrian Larsen

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Dr. Adrian Larsen

Adrian P. Larsen, D.C., F.A.S.A., C.Ac. Dr. Larsen is President of Miridia Technology Inc., and one of the developers of the AcuGraph Digital Meridian Imaging system. He currently divides his time between research, product development, and teaching. Dr. Larsen also holds certifications in Applied Kinesiology and CPK, and has specialized training in SOT and craniopathy. He, his wife, and 7 children reside in Meridian, Idaho.

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