SP 4 — Gōng Sūn (公孙) — Grandfather Grandson
On this page
1. Overview
SP 4 — Gōng Sūn (公孙) — is an acupuncture point on the Spleen meridian. Its English name, Grandfather Grandson, reflects the point’s classical character and location. It is used regularly in acupuncture practice for a range of conditions.
I am Dr (TCM) Attilio D’Alberto, a member of the British Acupuncture Council with over 25 years of clinical experience. I practise at my clinic in Wokingham, Berkshire.
2. Location
Distal and inferior to the base of the 1st metatarsal bone, at the junction of red and white skin.
3. Actions
- Opens and regulates the Chong Mai (Penetrating Vessel)
- Tonifies the Spleen and resolves Dampness
- Regulates the Stomach and descends rebellious Qi
- Calms the Heart and Mind
4. Indications
- Opening point of the Chong Mai — all Chong Mai disorders
- Gynaecological disorders — irregular menstruation, amenorrhoea, uterine bleeding
- Digestive disorders — vomiting, nausea and gastric pain
- Heart pain and palpitations via the Chong Mai
5. Needling
Perpendicular insertion 0.5–0.8 cun.
Important: Acupuncture should only be performed by a fully qualified practitioner. All needles I use are sterile, single-use and disposed of in a clinical sharps container immediately after treatment.
6. Clinical notes
SP 4 is the Luo-Connecting point of the Spleen and opening point of the Chong Mai. Paired with PC 6 to open the Chong Mai, this combination is one of the most important in fertility practice — the Chong Mai is the Sea of Blood governing menstruation and the uterus. The SP 4 + PC 6 combination is also widely used for morning sickness and nausea during IVF.
7. Treatment at my clinic
I use SP 4 as part of tailored acupuncture prescriptions for conditions including Fertility, Irregular menstrual cycle, Morning sickness. Each treatment is individually designed following a full TCM assessment.
I see patients in person at my clinic in Wokingham, Berkshire. Visit the prices page for consultation fees. Return to the acupuncture points directory or the acupuncture main page.















