Small Intestine meridian

SI-1 (Shàozé, 少泽) — Lesser Marsh

Meridian
Small Intestine (SI)
Anatomical view
posterior
Point classification
Jing-well and Metal point of the Small Intestine channel.
Depth reference
0.1 cun shallow perpendicular insertion or brief pricking
Moxibustion
Applicable
Reference aliases
SI1; Shaoze; 少泽; Lesser Marsh

Anatomical location

On the ulnar side of the little finger, 0.1 cun proximal to the ulnar corner of the nail, where the nail base meets its ulnar border.

Traditional actions

Clears heat; revives consciousness; opens the sensory portals; traditionally benefits lactation.

Recorded indications

Primary: High fever; sudden loss of consciousness; sore throat; breast swelling or low milk flow.

Secondary: Headache; eye redness; pain at the little finger.

How to read this reference

AcuAtlas separates anatomical location, traditional classification, recorded actions, indications, insertion-depth references, and moxibustion notes because these fields answer different study questions. The location statement is the orientation anchor. The classification and actions describe traditional reference categories, while indications summarize how checked educational sources associate the point with established teaching material. They are not a recommendation to select or stimulate the point.

Depth and moxibustion entries are reproduced as bounded reference notes rather than procedural instructions. Individual anatomy, technique, angle, clinical setting, and local professional standards can change what is appropriate. Review the cited documents and supervised training material before using any technical field. The normalized map coordinate is included only to place the point on the matching AcuAtlas body plate; it is not a substitute for palpation or anatomical assessment.

Sources

References displayed on this page were recorded with the point dataset.

  1. WHO Standard Acupuncture Point Locations in the Western Pacific Region SI1, p. 88
  2. American Dragon Acupuncture Point Reference SI-1: Command Functions, Actions, Indications and Needling

Frequently asked questions

Where is SI-1 located?

On the ulnar side of the little finger, 0.1 cun proximal to the ulnar corner of the nail, where the nail base meets its ulnar border.

What reference actions and indications are recorded for SI-1?

Clears heat; revives consciousness; opens the sensory portals; traditionally benefits lactation. The dataset lists these primary indications: High fever; sudden loss of consciousness; sore throat; breast swelling or low milk flow. Secondary indications are recorded as: Headache; eye redness; pain at the little finger.

Is SI-1 safe during pregnancy?

This dataset does not identify SI-1 as one of its five mandatory pregnancy-caution points. That is not a declaration of safety. Pregnancy-related point selection requires individualized assessment by a qualified clinician.