KI10 Yin Valley

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

KI10 (Yingu, “Yin Valley”) is the He-Sea (Water) point of the Kidney Channel Meridian. It is located when the knee is flexed, this point is located on the medial side of the popliteal fossa, between the tendons of semitendinosus and semimembranosus, at the level of BL40 (Weizhong). It clears damp-heat, benefits the Kidneys, regulates menstruation.

Location

When the knee is flexed, this point is located on the medial side of the popliteal fossa, between the tendons of semitendinosus and semimembranosus, at the level of BL40 (Weizhong).

Needling

Perpendicular insertion 0.8-1.2 cun.

TCM functions

Clears damp-heat, benefits the Kidneys, regulates menstruation.

Indications

Knee pain, impotence, uterine bleeding, hernia, difficult urination.

He-Sea (Water)

Clinical notes

As the He-Sea (Water) point of the Kidney meridian, KI10 is significant for clearing damp-heat from the lower jiao, making it a primary point for conditions like urinary tract infections, vaginitis, and genital itching. It also benefits the Kidneys by nourishing Yin and consolidating Jing, useful for impotence, seminal emission, and uterine bleeding. Its location in the popliteal fossa makes it effective for knee pain and stiffness, especially when dampness is involved.

On the Kidney Channel channel

KI10 is one of 27 points on the Kidney Channel Meridian. Nearby points:

Frequently asked questions

Where is KI10 located?

KI10 (Yingu) is located when the knee is flexed, this point is located on the medial side of the popliteal fossa, between the tendons of semitendinosus and semimembranosus, at the level of BL40 (Weizhong).

What is KI10 used for?

KI10 clears damp-heat, benefits the Kidneys, regulates menstruation. Common clinical indications include knee pain, impotence, uterine bleeding, hernia, difficult urination.

How is KI10 needled?

Perpendicular insertion 0.8-1.2 cun.

Which meridian is KI10 on?

KI10 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.