Yixi 譩譆
Upper back, 3 cun out from the back midline at the level of T6.
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Vertebra t6 · Descending part of trapezius muscle · Rhomboid major muscle · Iliocostalis thoracis muscle
Rendered straight from the 3D model at the computed location. The glowing ring marks Yixi.
On this page
1Where is Yixi?
Upper back, 3 cun out from the back midline at the level of T6.
The level is set by the lower edge of the T6 spinous process.
Vertebra t6 · Descending part of trapezius muscle · Rhomboid major muscle · Iliocostalis thoracis muscle
2How do I find it on my body?
- Find T7, level with the lower tips of the shoulder blades (arms hanging). The spinous process just above it is T6.
- Take the height of the lower edge of that spinous process.
- Press 3 cun out from the midline. With the arms hanging, this is the vertical line along the inner border of the shoulder blade.
- If the blade covers the spot, fold the arms in front so the shoulder blades slide outward, then press.
A cun is a body-scaled unit of length. The precise way is to divide a bone length into equal parts (proportional bone cun); finger widths are a quick estimate.
- descending part of trapezius
- The upper part of trapezius. It starts at the back of the skull and neck and runs down to the outer collarbone, and it shrugs the shoulder up.
- iliocostalis thoracis
- The chest part of the outermost column of erector spinae (iliocostalis). It runs from the lower ribs to the upper ribs.
- spinous process
- The bony spike sticking backward from the middle of each spine bone. The row of bumps you feel down the middle of the back is these, and they serve as the counting marks for back points.
- rhomboid major
- A diamond-shaped muscle under trapezius, between the upper back bones and the inner edge of the shoulder blade. It pulls the blade toward the spine.
3Before you press
- Do not bear down hard on the spine or ribs with an elbow or a tool.
- 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?
- The Zhenjiu Jiayi Jing explains the name: when the spot is pressed firmly, the patient exclaims 'yi-xi' — the name is that sound.
From traditional texts — not a claim of effect.
?FAQ
Where exactly is Yixi?
Upper back, 3 cun out from the back midline at the level of T6. The level is set by the lower edge of the T6 spinous process.
How do I find Yixi?
Find T7, level with the lower tips of the shoulder blades (arms hanging). The spinous process just above it is T6. Take the height of the lower edge of that spinous process. Press 3 cun out from the midline. With the arms hanging, this is the vertical line along the inner border of the shoulder blade. If the blade covers the spot, fold the arms in front so the shoulder blades slide outward, then press. it is level with Dushu (BL16) and, on the midline, with Lingtai (GV10).
What should I watch out for?
Do not bear down hard on the spine or ribs with an elbow or a tool. Avoid broken or swollen skin and press only to a comfortable level. Acupressure is not a substitute for medical care.
Sources
- Location: WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008), p. 122
- Standard comparison: Chinese national standard GB/T 12346-2021 (Nomenclature and location of meridian points), p. 19 — same location
- Korean anatomical terms: KMLE medical dictionary
- Traditional-use cross-check: AcuAtlas dataset (CC BY 4.0)
- Classical record: Zhenjiu Jiayi Jing vol. 3, sec. 9 (3-cun back line)
- 3D: computed on Z-Anatomy (CC BY-SA 4.0) · BodyParts3D © DBCLS
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.