LI4 – Hegu (Union Valley): One of the Most Powerful Acupressure Points

LI4 – Hegu (Union Valley): Location, Benefits & How to Use This Powerful Acupressure Point

One of the most important acupressure and acupuncture points in Traditional Chinese Medicine

LI4 (Hegu) is one of the most commonly used points in Traditional Chinese Medicine (TCM). It belongs to the Large Intestine meridian and is famous for its powerful ability to relieve pain, regulate the face and head, and move Qi throughout the body.

Because of its broad therapeutic effects, LI4 is often called a “command point for the face and head.” Practitioners frequently use it to treat headaches, sinus congestion, toothaches, stress, and many other conditions.

For acupressure beginners, it is also one of the easiest and most useful points to learn.

Location of LI4 (Hegu)

LI4 is located on the hand, in the fleshy area between the thumb and index finger.

How to find it:

Bring your thumb and index finger together.
A small muscle bulge will appear on the back of the hand.
The point is located at the highest point of this muscle.
When you press the spot, it is usually slightly tender.

In acupuncture anatomy, LI4 lies between the first and second metacarpal bones on the dorsum of the hand.

Meaning of the Name “Hegu”

In Chinese:

合谷 (Hé Gǔ)

合 (Hé) – to join, unite
谷 (Gǔ) – valley

The name “Union Valley” refers to the valley-like space between the thumb and index finger where the energies of the meridian gather.

This imagery reflects the idea that Qi flows through this area and can be regulated by stimulating the point.

Meridian Association

LI4 belongs to the Large Intestine Meridian (Hand Yangming Large Intestine Channel).

In TCM theory, this channel travels from the hand up the arm to the face and nose, which explains why LI4 has such a strong effect on:

headaches
sinus problems
tooth pain
facial disorders

Because the Yangming channel contains abundant Qi and blood, points on this meridian often have strong therapeutic effects.

Main Benefits of LI4

Practitioners use LI4 for a wide range of conditions.

Pain Relief

LI4 is considered one of the most powerful analgesic points in acupuncture.

It may help relieve:

headaches
migraines
toothache
facial pain
neck pain
shoulder tension

Head and Face Conditions

Because the Large Intestine meridian travels to the face, LI4 is widely used for:

sinus congestion
allergies
runny nose
facial swelling
jaw tension
eye pain

Stress and Emotional Tension

LI4 is also commonly used to help:

reduce stress
calm nervous tension
promote relaxation

When combined with other points, it may help support the body’s response to anxiety and emotional stagnation.

Immune System Support

In Traditional Chinese Medicine, LI4 is believed to strengthen defensive Qi (Wei Qi) and support the body when fighting external pathogens.

It is frequently used for:

colds
flu symptoms
fever
sore throat

How to Stimulate LI4 (Acupressure)

You can easily stimulate LI4 yourself using acupressure.

Step-by-step technique

Locate the point between the thumb and index finger.
Use the thumb of the opposite hand to apply firm pressure.
Press and massage the area in small circular movements.
Continue for 30–60 seconds.
Repeat on the other hand.

A dull ache or slight tenderness is normal and indicates the point is activated.

Common Acupressure Combinations

LI4 is often combined with other points to enhance its effects.

Some common combinations include:

LI4 + LV3 (Four Gates)
Used to promote the smooth flow of Qi and Blood, often for stress, headaches, and emotional stagnation.

LI4 + ST36
Used to strengthen the body’s overall energy and immune system.

LI4 + Yintang
Commonly used for stress relief and headaches.

Important Safety Note

⚠️ LI4 should not be stimulated during pregnancy.

In acupuncture and acupressure, LI4 is known to strongly move Qi and stimulate uterine contractions, which is why it is traditionally avoided in pregnant women unless used by trained professionals during labor.

Why LI4 Is One of the Most Famous Acupuncture Points

There are more than 360 classical acupuncture points, but only a small number are used extremely frequently.

LI4 is one of them because it:

has very broad therapeutic effects
is easy to locate
responds well to both acupuncture and acupressure
strongly influences the head and face

For many practitioners, it is one of the first points learned in Chinese medicine training.

Key Takeaways

LI4 (Hegu) is located between the thumb and index finger.
It belongs to the Large Intestine meridian.
It is widely used for pain relief, headaches, sinus problems, and stress.
The point is easy to stimulate with acupressure massage.
Avoid stimulating LI4 during pregnancy.