Large Intestine 2 (LI 2) Er Jian — Second Interval

This is the Ying-Spring and Water point of the Large Intestine channel. It clears heat and reduces swelling of the face, throat and teeth.

Large Intestine 2 (LI 2) Er Jian 二間 — Second Interval

Location

On the radial side of the index finger, distal to the second metacarpophalangeal joint, at the border of the red and white skin.

Anatomy

On the radial side of the proximal phalanx; the dorsal and palmar digital arteries; the digital nerves from the radial and median nerves.

Actions & Functions

  • Clears heat and reduces swelling
  • Benefits the face, throat and teeth

Indications

Toothache, sore throat, epistaxis, facial pain and deviation, blurred vision, and febrile disease.

Needling

0.2-0.3 cun, perpendicular insertion.

Moxibustion Suitability

Suitable for moxibustion, though more often needled to clear heat.

Point Combinations

With LI-4 for toothache and facial disorders.

Classical Text References

The Ying-Spring (Water) point of the Large Intestine.

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

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.