Small Intestine 1 (SI 1) Shao Ze — Lesser Marsh

This is the Jing-Well and Metal point of the Small Intestine channel. It clears heat, benefits the breasts and promotes lactation, and restores consciousness.

Small Intestine 1 (SI 1) Shao Ze 少澤 — Lesser Marsh

Location

On the ulnar side of the little finger, approximately 0.1 cun proximal to the corner of the nail.

Anatomy

The nail bed of the little finger; the arterial and venous network of the digit; the palmar and dorsal digital nerves from the ulnar nerve.

Actions & Functions

  • Clears heat and benefits the throat
  • Promotes lactation and benefits the breasts
  • Restores consciousness and opens the orifices

Indications

Insufficient lactation, mastitis, sore throat, headache, febrile disease, loss of consciousness, and eye disorders.

Needling

0.1 cun shallow insertion, or prick to bleed.

Moxibustion Suitability

Suitable for moxibustion, particularly to promote lactation.

Point Combinations

With SI-11 and ST-18 for insufficient lactation; with the Jing-well points for loss of consciousness.

Classical Text References

The Jing-Well (Metal) point of the Small Intestine, classically used for lactation and febrile disease.

Cautions & Contraindications

Bleeding technique requires a sterile lancet.

Latest Research

Latest peer-reviewed research on this point will be summarised here, with citations linked to PubMed, via our research integration.

About Attilio

Doctor of Chinese medicine, acupuncture expert and author of My Fertility Guide and My Pregnancy Guide.

Check Also

PubMed research

Acupuncture Shows Sustained Benefits for Chronic Daily Headache Prevention in Adults, Meta-Analysis Finds

Research summary (Acupuncture): Utility of Acupuncture Therapy for Adult Chronic Daily Headache Prophylaxis: A Systematic Review and Meta-Analysis. - Medical science monitor : international medical journal of experimental and clinical research, 2026.