San Jiao 4 (SJ 4) Yang Chi — Yang Pool

This is the Yuan-Source point of the Triple Burner channel. It benefits the wrist, harmonises the three burners and clears heat.

San Jiao 4 (SJ 4) Yang Chi 陽池 — Yang Pool

Location

On the dorsum of the wrist, at the transverse crease, in the depression on the ulnar side of the extensor digitorum communis tendon.

Anatomy

On the ulnar side of the extensor digitorum tendon; the dorsal carpal arterial network; the dorsal branch of the ulnar nerve and the posterior antebrachial cutaneous nerve.

Actions & Functions

  • Harmonises the Triple Burner
  • Clears heat and benefits the wrist
  • Generates fluids

Indications

Pain of the wrist and arm, deafness, febrile disease, malaria, thirst (wasting and thirsting disorder), and dry mouth.

Needling

0.3-0.5 cun, perpendicular insertion.

Moxibustion Suitability

Suitable for moxibustion.

Point Combinations

With SJ-5 for wrist disorders; with SJ-3 for the ear.

Classical Text References

The Yuan-Source point of the Triple Burner.

Cautions & Contraindications

None specific.

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.

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PubMed research

Complementary Therapies Including Tai Chi Show Physiological and Psychological Benefits for Chronic Obstructive Pulmonary Disease Patients

Research summary (Tai Chi): Effects of complementary therapies on physiological and psychological outcomes in chronic obstructive pulmonary disease patients: A systemat - Respiratory medicine, 2026.