Small Intestine

SI1

少泽 · Shaoze

Lesser Marsh

Little-finger well point, start of the Small Intestine channel.

Jing-well · Metal point of Small Intestine

Use caution

System

Channel: Small Intestine (SI)
Element: Fire
Yin or yang: yang
Organ system: Small Intestine
Region: Hand
Limb rule: Hand Taiyang

Open the Small Intestine page

Where it is

On the little finger, beside the nail corner on the side toward the ring finger.

Nearby: Nail tip. Very little tissue.

Traditionally said to

Jing-well and metal point of Small Intestine. Classical notes mention breast milk and eye heat. Treat both as historical indications, not instructions for lactation or eye disease.

What people look up

Pain relief

Acupressure

Light touch beside the nail for 20–30 seconds if you are only learning the location.

When not to press: Do not prick the finger. Breast or eye symptoms need licensed care.

About 30–90 seconds is the usual window, unless the step above is shorter. Stop if pain, dizziness, or anything unusual shows up.

Licensed practice only

Needle depth, angle, electroacupuncture

Textbook language for students. Not instructions. A cun is a body-inch on that person, not a ruler inch. Do not needle yourself.

Depth

Often about 0.1 cun, or a historical prick. Not a home method.

Angle

Shallow, beside the nail.

Electroacupuncture

Introductory charts rarely assign a standard electroacupuncture setting here. Clinics that use current choose frequency and intensity for that person. No milliamp figure is given, because copying one would be misleading.