ST-16 - Breast Window
膺窗 - Yīng chuāng
Point Region: Chest
Location & How to Find
Anatomical Location: On the front of the chest, in the third space between the ribs, 4 cun out from the midline.
Distances are in cun, a unit that scales with each person's body. As a guide, the width of your thumb at its joint is 1 cun, and your four fingers held together, measured across the middle joints, are 3 cun.
How to Locate:
- Find the fourth rib space (in men, level with the nipples) and move up one rib to the third
- Follow it to the line straight up from your nipple
- The point is there
How to Apply Pressure
Because ST-16 sits on the chest near breast tissue, keep contact to a light fingertip hold and never press between the ribs. Avoid it with breast implants, after recent chest or breast surgery, or during breathing difficulty, which needs medical attention.
Traditional Indications
In TCM, this point is traditionally used for:
- Chest tightness
- Intercostal discomfort
- Rib pain
- Respiratory problems
Related Acupoints
Select a point to see its location, how to find it, and its traditional uses.
Important Precautions
Avoid this point with:
- Recent chest surgery
- Severe respiratory conditions
- Chest wall injuries
- Breast implants