Kidney 2 (KI 2) Ran Gu — Blazing Valley

This is the Ying-Spring and Fire point of the Kidney channel. It clears deficiency heat, regulates the lower burner and benefits the genitals.

Kidney 2 (KI 2) Ran Gu 然谷 — Blazing Valley

Location

On the medial aspect of the foot, in the depression distal and inferior to the tuberosity of the navicular bone, at the border of the red and white skin.

Anatomy

On abductor hallucis; the medial plantar and medial tarsal arteries; the medial plantar nerve and the medial crural cutaneous nerve.

Actions & Functions

  • Clears heat (especially deficiency heat) and cools the blood
  • Regulates the lower burner and benefits the genitals
  • Calms the Kidney and the spirit

Indications

Night sweats, irregular menstruation, abnormal vaginal discharge, genital itching, seminal emission, diabetes (wasting and thirsting), sore throat, and childhood convulsions.

Needling

0.3-0.5 cun, perpendicular insertion.

Moxibustion Suitability

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

Point Combinations

With KI-6 and HT-6 for night sweats; with SP-6 for gynaecological disorders.

Classical Text References

The Ying-Spring (Fire) point of the Kidney.

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.

Check Also

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.