Spleen MeridianSP4

Gongsun 公孫

For reference only · not a substitute for diagnosis or treatment

Short answer

Below and in front of the base of the first metatarsal, on the red-white flesh border.

Luo-connecting point (to the Stomach channel)Eight confluent points — paired with Neiguan (PC6)

See it in 3DRotate the body and peel back the skin to see the bones and muscles beneath.
Open the 3D Acupoint Map →

🖼See it in pictures

Gongsun — ① Where on the body? — **① Where on the body?**

Gongsun — Textbook view — skin on the left, muscle and bone underneath on the right — **Textbook view — skin on the left, muscle and bone underneath on the right**
Location and structures come from our 3D model; only the drawing style was refined with AI. Labels are added by us.

Gongsun — ③ Under the skin — **③ Under the skin**
Abductor hallucis · Medial head of flexor hallucis brevis · First metatarsal bone

Rendered straight from the 3D model at the computed location. The glowing ring marks Gongsun.

On this page

Where is Gongsun?
How do I find it on my body?
Before you press
How has it been used traditionally?
FAQ

1Where is Gongsun?

Below and in front of the base of the first metatarsal, on the red-white flesh border.

It is the dip you reach by sliding back from SP3.

It is on the inner side of the foot.

Beneath the point

Abductor hallucis · Medial head of flexor hallucis brevis · First metatarsal bone

Our 3D measurement · In our 3D model: on the top/sole skin border just in front of and below the base of the first metatarsal (where the base bulge ends, 18% along the bone), 37.9 mm from SP3.

2How do I find it on my body?

Place a finger on SP3.
Slide it toward the heel along the lower edge of the first metatarsal.
Stop just before the bone's base swells.

Check · your finger drops into a dip.

📖 Words explained

medial head of flexor hallucis brevis: The inner head of the short big-toe flexor in the sole. It attaches near the inner sesamoid bone under the root of the big toe.
abductor hallucis: A muscle along the inner edge of the sole from the heel to the big toe. It spreads the big toe and supports the inner arch.
red-white flesh border: The border on the hands and feet where the skin of the back meets the skin of the palm or sole and its color and texture change; the old name means 'border of red and white flesh'. It is used as a guide line for locating points.

3Before you press

⚠ Do not press when

Avoid broken or swollen skin and press only to a comfortable level.
Acupressure is not a substitute for medical care.

4How has it been used traditionally?

In classical theory this is the Luo-connecting point, where a branch leaves the Spleen channel for its paired Stomach channel (Lingshu, ch. 10) — a historical classification, not a claim of effect.
As one of the eight confluent points it is traditionally paired with Neiguan (PC6) on the forearm, and is usually linked with the Chong vessel.

From traditional texts — not a claim of effect.

?FAQ

Where exactly is Gongsun?

Below and in front of the base of the first metatarsal, on the red-white flesh border. It is the dip you reach by sliding back from SP3. It is on the inner side of the foot.

How do I find Gongsun?

Place a finger on SP3. Slide it toward the heel along the lower edge of the first metatarsal. Stop just before the bone's base swells. your finger drops into a dip.

What should I watch out for?

Avoid broken or swollen skin and press only to a comfortable level. Acupressure is not a substitute for medical care.

← PreviousTaibai · SP3 Next →Shangqiu · SP5

Sources

Location: WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008), p. 71
Standard comparison: Chinese national standard GB/T 12346-2021 (Nomenclature and location of meridian points)
Korean anatomical terms and locating tips: KMCRIC Standard Acupoint DB (Korea)
Classification source: Lingshu ch. 10 (Jing Mai, connecting vessels) · Zhenjiu Jiayi Jing vol. 3 (Siku Quanshu edition)
Eight confluent points: Kim et al., J Haehwa Med 2001;10(1):221–235 (abstract) · AcuAtlas dataset (CC BY 4.0)

Positions computed from the WHO standard locations (2008) on Z-Anatomy (CC BY-SA 4.0) · BodyParts3D © DBCLS. For reference only — not a substitute for diagnosis or treatment. See a clinician if you are unwell.