Large Intestine Meridian (手阳明大肠经): Path, Points & Functions

1. Overview of the Large Intestine Meridian

The Large Intestine Meridian (手阳明大肠经, Shǒu Yángmíng Dàchángjīng) belongs to the Metal element and is paired with the Lung Meridian. In TCM, the Large Intestine is responsible for "transmission and排泄" — it receives waste from the Small Intestine, absorbs remaining fluids, and excretes the rest as stool. The Large Intestine's peak energy time is 5–7 AM, which is why TCM encourages having a bowel movement in the early morning when this organ's Qi is at its strongest.

This meridian is crucial for elimination, skin health, and letting go — both physically and emotionally. In TCM philosophy, the Metal element is associated with grief and the ability to release what is no longer needed, whether that is physical waste, outdated emotions, or attachments. When the Large Intestine functions well, elimination is regular, the skin is clear, and there is a healthy capacity to move on from emotional experiences. When it is imbalanced, physical symptoms like constipation and skin breakouts often accompany emotional difficulty in letting go.

The Large Intestine's partnership with the Lung reflects the Metal element's overall theme of taking in the pure and letting go of the impure. The Lung takes in clean air (inspiration), while the Large Intestine releases waste (expiration). This elegant pairing shows how TCM sees the body as a mirror of natural processes — the cycle of receiving and releasing that governs all of life.

2. Meridian Pathway

The Large Intestine Meridian is a Yang meridian that runs from the hand to the face, traversing the arm, shoulder, neck, and head. Its pathway is as follows:

The Large Intestine Meridian starts at the Shangyang point (LI1) on the radial side of the index finger. From there, it ascends along the outer (radial) edge of the arm, passing through the elbow and continuing up to the shoulder. It then reaches the neck, crosses the face, and ends at the Yingxiang point (LI20) beside the nostril.

This pathway explains why Large Intestine points are so effective for treating conditions of the face, head, and upper body. The meridian's termination point at the nostril (LI20) makes it the primary channel for treating nasal and sinus conditions. Its passage through the shoulder and arm explains why points along this meridian can relieve shoulder stiffness, arm pain, and tennis elbow. The connection between the hand and the face also illustrates the TCM principle that distal points (on the hands and feet) can treat proximal areas (the head and torso) — which is why pressing a point on your hand can relieve a toothache or clear your sinuses.

3. Key Acupoints on the Large Intestine Meridian

The Large Intestine Meridian contains 20 acupoints on each side of the body. The following are the most clinically significant and commonly used in acupuncture and acupressure practice.

LI4 Hegu (合谷) — The Master Pain Relief Point

LI4 Hegu is one of the most famous and frequently used acupoints in all of Chinese medicine. Located on the back of the hand, in the fleshy webbing between the thumb and index finger, Hegu is the "command point" for the face and head. It is the first choice for headaches, toothaches, facial pain, sinus congestion, and sore throat. It is also used to promote labor and is famously contraindicated during pregnancy (unless labor is being induced).

To locate Hegu, squeeze your thumb and index finger together — a bulge of muscle will appear on the back of your hand. The point is at the peak of this bulge. Apply firm, circular pressure for 1–3 minutes on each hand. For a detailed guide, see our Hegu LI4 acupressure guide.

4. Related Organ & Functions

In TCM, the Large Intestine is a Fu (Yang) organ that works in close partnership with the Lung, its Zang (Yin) paired organ. Both belong to the Metal element and share the function of managing what comes in and what goes out.

The Large Intestine receives food waste from the Small Intestine, absorbs the remaining water and fluids, and excretes the rest as stool. This function of "letting go" is both physical and symbolic. In TCM, the ability to have regular, complete bowel movements is seen as a sign of health — not just because of the physical benefit, but because it reflects a healthy capacity to release and move on.

The Lung–Large Intestine partnership is one of the most elegant pairings in TCM. The Lung governs respiration — taking in clean air and descending Qi. This descending action of Lung Qi directly helps the Large Intestine eliminate waste. When Lung Qi fails to descend (due to grief, respiratory illness, or Qi stagnation), it can lead to constipation. Conversely, when the Large Intestine is blocked, it can cause Lung symptoms like cough, asthma, or skin problems. This is why TCM practitioners often treat both organs together when addressing skin conditions, respiratory issues, or elimination problems.

The Large Intestine is also closely connected to skin health. Because the Metal element governs the surface of the body (the skin and the body's defensive Wei Qi), Large Intestine imbalances often manifest as acne, rashes, dry skin, or other dermatological issues. Clearing the Large Intestine is a common TCM strategy for improving skin conditions.

Large Intestine in Balance vs. Imbalance

5. Symptoms of Large Intestine Meridian Imbalance

When the Large Intestine Meridian is out of balance, symptoms can range from digestive disturbances to skin, respiratory, and emotional issues. The most common signs include:

• Elimination: Constipation, diarrhea, or alternating between the two; abdominal pain and bloating; a feeling of incomplete evacuation
• Skin: Acne (especially on the face and jawline), rashes, eczema, psoriasis, dry or excessively oily skin — the skin is often called the "third lung" and reflects Large Intestine health
• Dental and oral: Toothache, gum swelling, mouth ulcers, bad breath — the meridian passes through the lower teeth and jaw
• Nasal and respiratory: Nasal congestion, sinusitis, runny nose, loss of smell — the meridian ends at the nostril
• Throat: Sore throat, swollen tonsils, dry throat
• Musculoskeletal: Shoulder and arm pain along the meridian path, elbow pain, stiffness in the neck and upper back
• Emotional: Difficulty "letting go" — holding onto grudges, attachments, or grief; feeling stuck or unable to move forward; excessive sadness

If you regularly experience constipation alongside skin breakouts or nasal congestion, the Large Intestine Meridian is a likely contributor. The connection between these symptoms — which may seem unrelated in Western medicine — is a perfect example of TCM's holistic approach.

6. Dietary Recommendations for the Large Intestine

Because the Large Intestine belongs to the Metal element, it benefits from foods that are moistening, high in fiber, and supportive of elimination. The Metal element is associated with autumn and dryness, so keeping the body adequately hydrated and moistened is key.

For a comprehensive food guide tailored to your needs, visit our TCM Food Atlas. Avoid excessive cold and raw foods if you have weak digestion, and limit greasy, fried, and spicy foods that can create damp-heat in the intestines. Drinking warm water, especially first thing in the morning (5–7 AM), helps activate Large Intestine Qi and promote a healthy morning bowel movement.

7. Exercise Recommendations

Gentle movement and breathing exercises are excellent for supporting the Large Intestine Meridian. Because the Large Intestine is paired with the Lung, exercises that emphasize breathing, descending Qi, and abdominal movement are particularly beneficial. The following practices are recommended:

• Eight Brocades Qigong — This classic Qigong set includes movements that stretch the arms and chest, directly stimulating the Large Intestine and Lung meridians. The "Two Hands Hold Up the Sky" movement is especially good for regulating the Triple Burner and promoting elimination.
• Qigong for Digestion — Specific Qigong routines that massage the abdominal organs, promote peristalsis, and strengthen the Spleen, Stomach, and Large Intestine.
• Tai Chi Breathing Foundation — Deep, abdominal breathing exercises that strengthen Lung Qi and its descending function, which in turn supports the Large Intestine's ability to eliminate.

Simple daily habits also help: a morning walk during the 5–7 AM Large Intestine time, abdominal self-massage (clockwise circles on the belly), and deep diaphragmatic breathing all encourage healthy elimination and clear the meridian.

8. Cross-Links & Related Resources

The Large Intestine Meridian is part of the interconnected TCM organ system. Here are the key connections to explore further:

• Paired meridian: The Lung Meridian is the Large Intestine's Yin paired meridian. Together they form the Metal element pair, governing respiration, elimination, the skin, and the body's defensive Wei Qi.
• Related acupressure: For constipation relief, see our acupressure for constipation guide. For headaches and facial pain (using Large Intestine points like LI4), see our acupressure for headache guide.
• Food therapy: Explore our food therapy guides for recipes that promote healthy elimination and nourish the Metal element.
• Constitution: Take our constitution quiz to learn your body type and how it relates to your Large Intestine health.