KI5 Water Spring

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

KI5 (Shuiquan, “Water Spring”) is the Xi-cleft point of the Kidney Channel Meridian. It is located on the medial aspect of the ankle, 1 cun directly inferior to KI3. It regulates menstruation, alleviates pain, benefits the lower jiao.

Location

On the medial aspect of the ankle, 1 cun directly inferior to KI3.

Needling

Perpendicular insertion 0.3-0.5 cun.

TCM functions

Regulates menstruation, alleviates pain, benefits the lower jiao.

Indications

Dysmenorrhea, irregular menstruation, uterine prolapse, difficult urination.

Xi-cleft

Clinical notes

KI5, the Xi-cleft point of the Kidney meridian, is primarily used for acute conditions and pain related to the Kidneys and lower jiao, especially gynecological issues. It is highly effective for regulating menstruation, alleviating dysmenorrhea, amenorrhea, and uterine prolapse. Its Xi-cleft nature makes it potent for stopping acute pain and bleeding. KI5 is often combined with SP6 for menstrual irregularities.

On the Kidney Channel channel

KI5 is one of 27 points on the Kidney Channel Meridian. Nearby points:

Frequently asked questions

Where is KI5 located?

KI5 (Shuiquan) is located on the medial aspect of the ankle, 1 cun directly inferior to KI3.

What is KI5 used for?

KI5 regulates menstruation, alleviates pain, benefits the lower jiao. Common clinical indications include dysmenorrhea, irregular menstruation, uterine prolapse, difficult urination.

How is KI5 needled?

Perpendicular insertion 0.3-0.5 cun.

Which meridian is KI5 on?

KI5 is a point on the Kidney Channel Meridian (Zú Shàoyīn Shènjīng).

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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.