Spleen
SP4
公孙 · Gongsun
Yellow Emperor
Arch point that opens the Chong vessel.
Luo-connecting · Opens the Chong vessel
System
- Channel
- Spleen (SP)
- Element
- Earth
- Yin or yang
- yin
- Organ system
- Spleen
- Region
- Foot
- Limb rule
- Foot Taiyin
Where it is
On the inner foot, in the hollow just in front of the base of the first metatarsal, distal to SP3 along the same border.
Nearby: The arch. The tendon of the big toe is nearby. Press the hollow, not the tendon.
Traditionally said to
Luo point of the Spleen and opening point of the Chong vessel. Taught for stomach and spleen patterns, and studied as a pair with PC6.
What people look up
Acupressure
Seated, press the inner arch hollow for 30–60 seconds.
When not to press: Some teachers are quieter with Chong points in pregnancy. If pregnant, skip strong pressure and ask a licensed practitioner.
About 30–90 seconds is the usual window, unless the step above is shorter. Stop if pain, dizziness, or anything unusual shows up.
Licensed practice only
Needle depth, angle, electroacupuncture
Textbook language for students. Not instructions. A cun is a body-inch on that person, not a ruler inch. Do not needle yourself.
Depth
Common textbook range: about 0.5–0.8 cun perpendicular.
Angle
Perpendicular, in the hollow distal to the base of the first metatarsal.
Electroacupuncture
Introductory charts rarely assign a standard electroacupuncture setting here. Clinics that use current choose frequency and intensity for that person. No milliamp figure is given, because copying one would be misleading.
Nearby on this channel
Supreme White
Inner-foot source point for spleen and damp teaching patterns.
Three Yin Intersection
Inner-leg crossing of three yin channels. Not a pregnancy self-care point.
Traditionally avoided in pregnancy
Yin Mound Spring
Inner knee hollow taught for damp and heaviness.
Sea of Blood
Inner thigh point in the “blood” teaching set.
Herbs often paired for a similar pattern
Tags
gongsun · chong · arch