KI2 Blazing Valley

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

KI2 (Rangu, “Blazing Valley”) is the Ying-Spring (Fire) point of the Kidney Channel Meridian. It is located on the medial aspect of the foot, in the depression anterior and inferior to the navicular tuberosity. It clears deficiency heat, regulates the Kidneys, benefits the throat.

Location

On the medial aspect of the foot, in the depression anterior and inferior to the navicular tuberosity.

Needling

Perpendicular insertion 0.3-0.8 cun.

TCM functions

Clears deficiency heat, regulates the Kidneys, benefits the throat.

Indications

Sore throat, toothache, diabetes, night sweats, irregular menstruation.

Ying-Spring (Fire)

Clinical notes

As the Ying-Spring (Fire) point, KI2 is primarily used to clear deficiency heat, especially from the Kidneys, manifesting as night sweats, tidal fever, or five-palm heat. It is particularly effective for throat conditions due to Kidney Yin deficiency, such as chronic sore throat or hoarseness. Its location on the foot also makes it useful for local pain and swelling of the ankle and foot. KI2 is often paired with KI6 (Zhaohai) for severe Yin deficiency heat.

On the Kidney Channel channel

KI2 is one of 27 points on the Kidney Channel Meridian. Nearby points:

Frequently asked questions

Where is KI2 located?

KI2 (Rangu) is located on the medial aspect of the foot, in the depression anterior and inferior to the navicular tuberosity.

What is KI2 used for?

KI2 clears deficiency heat, regulates the Kidneys, benefits the throat. Common clinical indications include sore throat, toothache, diabetes, night sweats, irregular menstruation.

How is KI2 needled?

Perpendicular insertion 0.3-0.8 cun.

Which meridian is KI2 on?

KI2 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.