SP8 Earth's Crux

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

SP8 (Dìjī, “Earth's Crux”) is the Xi-cleft point of the Spleen Channel Meridian. SP8 is located 3 cun inferior to SP9, on the line connecting the medial malleolus with SP9, posterior to the medial border of the tibia. It regulates menstruation, invigorates blood, resolves dampness.

Location

SP8 is located 3 cun inferior to SP9, on the line connecting the medial malleolus with SP9, posterior to the medial border of the tibia.

Needling

Perpendicular insertion 1-1.5 cun.

⚠ Pregnancy: avoid — may stimulate uterine contraction (miscarriage / early-labour risk).

TCM functions

Regulates menstruation, invigorates blood, resolves dampness.

Indications

Dysmenorrhea, irregular menstruation, abdominal pain, diarrhea, urinary disorders.

Xi-cleft

Clinical notes

As the Xi-cleft point of the Spleen meridian, SP8 is highly effective for acute conditions of the Spleen and Blood, especially gynecological disorders. It is a key point for regulating menstruation, invigorating blood, and stopping bleeding, particularly for dysmenorrhea, irregular menstruation, and uterine bleeding due to blood stasis or heat. It also addresses acute abdominal pain and damp-heat in the lower jiao. A classic pairing is with SP6 for severe dysmenorrhea.

On the Spleen Channel channel

SP8 is one of 21 points on the Spleen Channel Meridian. Nearby points:

Frequently asked questions

Where is SP8 located?

SP8 is located 3 cun inferior to SP9, on the line connecting the medial malleolus with SP9, posterior to the medial border of the tibia.

What is SP8 used for?

SP8 regulates menstruation, invigorates blood, resolves dampness. Common clinical indications include dysmenorrhea, irregular menstruation, abdominal pain, diarrhea, urinary disorders.

How is SP8 needled?

Perpendicular insertion 1-1.5 cun. Caution: ⚠ Pregnancy: avoid — may stimulate uterine contraction (miscarriage / early-labour risk).

Which meridian is SP8 on?

SP8 is a point on the Spleen Channel Meridian (Zú Tài Yīn Pí Jīng).

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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.