LI-1 - Metal Yang
商阳 - Shāng yáng
Point Region: Hand
LI-1, also known as 'Shangyang' (meaning 'Metal Yang'), is the final point on the Large Intestine channel and its 'Jing-Well' point. This point is considered the beginning of the LI channel, located at the outermost corner of the index finger.
As a 'Jing-Well' point, its function is to 'clear heat' and 'release the exterior,' meaning it helps the body expel external pathogens. It's often used for conditions related to the throat and teeth, as these are the areas that the Large Intestine meridian passes through on its way to the head. LI-1 can be quite sensitive, which makes it an excellent indicator of energy blockages along the meridian.
The location of LI-1 at the end of the finger and the beginning of the channel makes it a significant point for jump-starting the flow of energy throughout the entire LI meridian. Just as a wellspring brings water to the surface, this point brings vital energy to the surface of the body, ready to travel along its pathway.
Location & How to Find
Anatomical Location: Located at the nail base of the index finger, on the radial side.
How to Locate:
- Look at your index finger
- Find the corner of the index finger nail on the thumb side
- Locate where the nail meets the skin at this corner
- The point is right at this junction

Primary Functions
Digestive System
- Regulates bowel function and elimination
- Relieves constipation and sluggish digestion
- Stimulates intestinal peristalsis
- Promotes healthy bowel movements
Respiratory System
- Clears respiratory congestion
- Alleviates breathing difficulties
- Strengthens lung qi and defensive energy
Immune & Energy System
- Boosts defensive qi (wei qi)
- Enhances immune function
- Increases overall vitality and energy
Emotional & Mental
- Promotes letting go and release
- Reduces mental stagnation
- Helps with emotional detoxification
Clinical Applications
Primary Indications
- Sore throat
- Toothache
- Fever
- Loss of consciousness
- Throat pain
- Dental pain
- High temperature
- Fainting
Related Health Concerns
Common Conditions:
Related Acupoints
Select a point to learn about its location, primary functions, clinical applications, and protocols.
LI-1 Protocols
N/A
Important Precautions
- Broken skin around nail
- Severe nail infections
- Recent nail injury