Kidney 15 (KI 15) Zhong Zhu — Central Flow

This point, on the lower abdomen, regulates menstruation and the Intestines and relieves lower abdominal pain.

Kidney 15 (KI 15) Zhong Zhu 中注 — Central Flow

Location

On the lower abdomen, 1 cun inferior to the umbilicus, 0.5 cun lateral to the anterior midline (lateral to REN-7).

Anatomy

On the rectus abdominis; the inferior and superior epigastric arteries; the tenth intercostal nerve.

Actions & Functions

  • Regulates menstruation
  • Regulates the lower burner and the Intestines

Indications

Irregular menstruation, lower abdominal pain, constipation, and diarrhoea.

Needling

0.8-1.2 cun, perpendicular insertion.

Moxibustion Suitability

Suitable for moxibustion.

Point Combinations

With ST-25 and REN-6 for abdominal and intestinal disorders.

Classical Text References

A meeting point with the Chong Mai.

Cautions & Contraindications

Caution in pregnancy.

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.