The great pain-relieving point of Chinese medicine. Hegu (LI-4) clears the head, opens the face, drives away Wind and releases the exterior — and when anything hurts anywhere above the neck, this is where you begin.
Contraindications
⚠️ Forbidden in pregnancy. Hegu strongly moves Qi and Blood (Xue) and is classically used to induce and hasten labour — needling or applying firm acupressure to this point in a pregnant patient carries a real risk of miscarriage or premature labour. This is an absolute contraindication throughout the entire pregnancy, by needle and by firm acupressure alike. In all other circumstances Hegu is a safe and widely used point; keep to the stated depth and clean technique.
Name & story
The name 合谷 Hegu means 'Joining Valley' or 'Union Valley'. Picture the back of your hand: the fleshy mound that rises between the thumb and the index finger looks just like a small valley nestled between two hills — the two metacarpal bones are the hills, and the soft web between them is the valley where they meet. Simple, visual, and exactly right. Some teachers also read a deeper meaning into the word 'joining': this is the Yuan Source point, where the channel's deepest Qi gathers and surfaces, as if two streams converge in a single valley.
Point family & character
Hegu belongs to the Large Intestine Meridian (LI). Its most important character is that it is the Yuan Source point of the channel — the place where the original Qi of the Large Intestine surfaces and can be directly reached. It is also counted among Ma Dan-yang's Heavenly Star points, the twelve most celebrated and widely used points in the classical tradition. The old command rhyme places it in the famous 'Four Gates' pairing with LR-3 (Taichong): together they are said to open the whole body, move Qi and Blood (Xue), and release constraint.
Five-element dynamics
The Large Intestine is the Yang channel of the Metal element. Metal governs the Lung and Large Intestine — the organs that open to the outside world through the skin and the mucous membranes of the nose, throat and bowel. Hegu, as Yuan Source point, draws on that Metal quality of releasing and letting go: releasing pathogens through the exterior, releasing pain, releasing what is stuck. When Wind or Cold locks the surface and traps the body's defensive Qi, Hegu is the point that throws the door open. And because the Large Intestine channel runs all the way up the arm, crosses the neck and ends beside the nose, Hegu's influence over the entire face, head and sense organs flows naturally from the channel's own path.
Location
Find the back of the hand. Look at the web between the thumb and the index finger. Place the crease of the opposite thumb's first joint right at the web margin — the tip of that thumb lands approximately on the point, which sits near the midpoint of the radial (thumb-side) border of the second metacarpal bone, on the highest point of the mound when the thumb is adducted. Alternatively: press gently into the fleshy valley between the two metacarpal bones until you feel a distinct ache — that is Hegu.
Anatomy & fascia
The golden tip
For a headache, a cold coming on, a toothache or a tense, foggy head: find the fleshy mound on the back of the hand between thumb and index finger. Press firmly into it with the opposite thumb, angling slightly toward the wrist, and hold or knead for 1–2 minutes. A clear, somewhat intense aching sensation spreading up the arm or toward the face means you have the right spot. Repeat on both hands. This is safe for daily use for pain and tension — but remember: never use firm pressure on this point during pregnancy.
For education only — not medical advice. Consult a qualified practitioner.
The point lies in the first dorsal interosseous muscle, between the first and second metacarpal bones on the back of the hand.
Needling
The needle is inserted perpendicularly, straight into the fleshy mound. For a stronger, channel-coursing effect — particularly when moving Qi up toward the face or down the arm — an oblique insertion directed proximally (angled toward the wrist) can be used. Hegu is a robust point that accepts firm stimulation well; the needle sensation (De Qi) often radiates up the arm toward the elbow and shoulder, or travels toward the face and teeth.
Safe depth
0.5–1 Cun perpendicularly.
Moxa, cupping & Tui Na
Hegu responds very well to firm acupressure and Tui Na massage — press the mound deeply with the opposite thumb and hold or knead for 1–2 minutes. This is the most commonly self-applied acupressure point in Chinese medicine, and for good reason: even moderate pressure produces a clear, spreading sensation. Moxa can be used when there is Cold in the channel or a deficient exterior. For releasing the exterior in the early stages of a cold or flu, a warming moxa stick held over the point helps drive out Wind-Cold.
Functions
Expels Wind and releases the exterior; promotes sweating when the surface is locked by Wind-Cold, and stops sweating when defensive Qi is weak and sweating is excessive. Regulates and benefits the face, eyes, nose, mouth, ears and teeth — the principal point for all disorders of the head and face. Activates the channel and alleviates pain — the foremost analgesic point of the entire body. Harmonises the ascending and descending of Qi and subdues rebellious Qi in the head. Tonifies Qi and consolidates the exterior. Induces labour. Calms the Shen.
Indications
Onset of colds, influenza and upper-respiratory infections: fever, chills, sneezing, runny nose and headache. Disorders of sweating — both complete absence of sweat (in exterior Wind-Cold) and uncontrolled spontaneous sweating (when the exterior is weak). All disorders of the face and head: frontal headache and general headache, toothache and jaw pain, facial and trigeminal neuralgia, facial paralysis and deviation of the mouth and eye (Bell's palsy, Wind-stroke sequelae), sinus congestion and nasal obstruction, nosebleed, sore and swollen throat, red and painful eyes, tinnitus, mouth ulcers. Pain, weakness, contraction or numbness of the arm, hand and fingers; hemiplegia and post-stroke rehabilitation. Promoting stalled or delayed labour in obstetrics.
Mind & spirit (Shen)
Hegu touches the mind through its power to clear and open. In Chinese medicine, when Wind or Heat rises into the head, the Shen is caught in that turbulence — a foggy, irritable, tightly wound feeling that makes it impossible to think clearly or rest. The head aches, the jaw clenches, the eyes feel hot and pressured. Hegu, by sweeping Wind and Heat from the upper body and strongly descending rebellious Qi, brings the head back to quietness. There is also its classical action of calming the Shen directly — not through nourishment, as a tonic point might, but through release. When anxiety is bound up in tension, physical holding and mental agitation all at once, Hegu's releasing, opening quality can let the whole tangle loosen.
Point combinations
With LR-3 (Taichong) — the celebrated 'Four Gates' combination: together they open the whole body, powerfully move Qi and Blood (Xue), relieve pain throughout, calm the Shen and subdue Liver Yang rising to the head. With LI-11 (Quchi) — a classical pairing for clearing Heat, reducing fever and addressing skin disorders and hypertension. With LU-7 (Lieque) — to release the exterior, open the nose and treat headache; these two cover Wind-Cold attacking the Lung and its passages. With ST-36 (Zusanli) — for the old rhyme pairing against dysentery and intestinal disorders. With ST-44 (Neiting) — for toothache and facial pain in the stomach channel territory. With BL-60 (Kunlun) or other distal points — general analgesic combinations for pain anywhere along the Yang channels.
Clinical spotlight
Hegu (LI-4) is quite simply the most widely used acupuncture point in the world for pain relief. Its reputation as the 'command point' for the face and head is backed by centuries of clinical use: toothache, headache, facial paralysis, sinus pain — Hegu is the default first choice. What makes it remarkable is that it achieves this not through local action (it sits on the hand, far from the face) but through the long reach of the Large Intestine Meridian (LI) and its powerful Qi-moving, Wind-expelling quality. Two especially striking aspects: first, its paired role with LR-3 (Taichong) as the 'Four Gates' — a combination so potent for moving Qi throughout the whole body that classical texts describe it as opening all the body's gates at once. Second, its absolute contraindication in pregnancy: Hegu's ability to strongly move Qi and Blood (Xue) and induce descent is so effective that it has been used for centuries to hasten labour — which makes it genuinely dangerous for a pregnant patient.
