SI2 Front Valley

Reviewed by · Licensed Acupuncturist & TCM Physician · Last reviewed June 2026

SI2 (Qiangu, “Front Valley”) is the Ying-Spring point of the Small Intestine Channel Meridian. It is located on the ulnar side of the little finger, distal to the metacarpophalangeal joint, in the depression anterior to the joint when the fist is clenched. It clears heat and benefits the ear and eyes.

Location

On the ulnar side of the little finger, distal to the metacarpophalangeal joint, in the depression anterior to the joint when the fist is clenched.

Needling

Perpendicular insertion 0.3-0.5 cun.

TCM functions

Clears heat and benefits the ear and eyes.

Indications

Headache, febrile diseases, tinnitus, deafness, sore throat, pain in the wrist.

Ying-Spring

Clinical notes

As a Ying-Spring point, SI2 is known for clearing heat, particularly from the Small Intestine meridian and its associated organs. It is clinically used for acute febrile diseases, sore throat, and ear infections, especially when accompanied by redness and swelling. It also benefits the eyes, addressing redness and pain, and is effective for numbness and pain in the fingers, often combined with SI3 for hand and wrist issues.

On the Small Intestine Channel channel

SI2 is one of 19 points on the Small Intestine Channel Meridian. Nearby points:

Frequently asked questions

Where is SI2 located?

SI2 (Qiangu) is located on the ulnar side of the little finger, distal to the metacarpophalangeal joint, in the depression anterior to the joint when the fist is clenched.

What is SI2 used for?

SI2 clears heat and benefits the ear and eyes. Common clinical indications include headache, febrile diseases, tinnitus, deafness, sore throat, pain in the wrist.

How is SI2 needled?

Perpendicular insertion 0.3-0.5 cun.

Which meridian is SI2 on?

SI2 is a point on the Small Intestine Channel Meridian (Shǒu Tài Yáng Xiǎo Cháng Jīng).

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⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.