What Dazhui does
Dazhui is treated here as a practical point rather than a curiosity: where it sits, how it is needled, what the tradition says it does, and the skin conditions in this database that name it.
Actions
- Clears Wind-Heat
- Releases the Exterior
- Tonifies Yang
- Clears Mind
Location
The written location is summarised from the classical record; use the landmark named there together with the diagram.
How to find it
Find the bony landmark first, then feel for the hollow or tender spot the location describes. The point is usually sensitive when pressed. Run a finger down the midline of the neck until you meet the first spinous process you can feel. That is C6, and it slips away under the finger when the neck is extended. C7 lies just below and stays palpable even with the neck extended. The point is in the hollow immediately beneath C7.
Deqi
De qi at this point is felt as local distension, heaviness or aching, and may travel a short way along the channel. Local distension and soreness that usually spreads to both shoulders, and some patients feel warmth running down the spine. Withdraw at once if an electric shock feeling or numbness shoots into the limbs, which suggests the needle is close to or touching the spinal cord.
A cun is a proportional body measurement, not a fixed length: one cun is about the width of the thumb at the knuckle, 1.5 cun about two finger widths, and 3 cun about the width of four fingers. On an average adult one cun is roughly one inch, but it scales with the person, which is why the texts measure in cun rather than centimetres.
Technique
Needling
Angle: 90 degrees, perpendicular Depth: Standard depth half a to one cun. Direction: Needle in the direction the location describes.
Moxibustion
Particularly recommended. Ten to twenty minutes, or three to seven cones of direct moxa, with the cone count traditionally matched to the patient's age.
Cupping
Particularly recommended at this point, over the upper back for exterior wind and heat.
Gua sha
Particularly recommended along the neck and upper back, avoiding broken or weeping skin.
Bleeding
Particularly recommended here in the classical record, for heat that has become stuck and congested in the upper body.
Skin uses
Dazhui is recorded as a meeting point of the Yang channels, with the actions of clearing Wind-Heat, releasing the exterior and tonifying Yang. A meeting point at the base of the neck is traditionally linked with the defensive layer, so Wind-Heat pictures with a sudden, superficial eruption or itch are the clearest indirect skin reading of its recorded action. The classical record fixes its location above the first thoracic vertebra rather than describing a skin use. With no skin-specific classical indication recorded for it, the rationale relies on traditional inference, not trial evidence.
No skin-specific classical indication is recorded for this point. The rationale above is an indirect, traditional reading of the point, not a promise of benefit.
Point classifications
| Classification | Value |
|---|---|
| Channel | Meridian |
Classical record
Located in the depression above the first thoracic vertebra.
Classical citation for this point.
For treating malaria, first ask where the disease originated. If it begins from the head and neck, moxa Dazhui before the episode; if from the lumbar spine, moxa Shenshu; if from the arms, moxa Sanjian.
Classical citation for this point.
The first recorded mention of Dazhui stands in the Qi Fu Lun, which sets out the location of the point and its significance.
Suwen (素问, Plain Questions), Qi Fu Lun, the chapter on qi dwellings.
When applying moxa at the vertebrae, moxa the prominent part of the bone process, for that gives the best result.
Zhengjiu Zisheng Jing (针灸资生经, Classic of Nourishing Life with Acupuncture and Moxibustion).
Safety
Who should treat this point
Acupuncture and moxibustion are practitioner procedures. This page is educational and is not a guide to self-treatment.
Caution
Safety flags: the reference marks it as a dangerous point. Needle with care, adjust depth to the patient's build, and modify or avoid the point where a flag applies. The reference puts the spinal cord about 1.25 to 1.75 cm under the skin at this level, varying with build, and in a thin person the canal can be reached at only 1.25 cun. The spine is kept straight or slightly flexed, and insertion is strictly perpendicular or oblique in an inferior direction, since that is the safest line. Numbness or electric shock running into the limbs means immediate withdrawal. The point moves Qi strongly, so it is used with care in pregnancy, and stimulation is reduced in the elderly or the very weak. The neck is kept covered after needling or moxa.
Deficiency and constitution
In a depleted patient the point is worked gently and briefly.
Before treatment
Educational reference only. Skin that is spreading, painful, blistering or accompanied by fever needs medical assessment.
Modern evidence and safety
General references for acupuncture safety and skin evidence. They are not specific to this point, and they are not a claim that needling it treats any condition.
- Acupuncture-related adverse events: systematic review and meta-analyses of prospective clinical studies. BMJ Open, 2021. PMID: 34489268.
- Acupuncture for atopic dermatitis: a systematic review and meta-analysis. BMJ Open, 2024. PMID: 39638592.
- Manual acupuncture for the treatment of chronic spontaneous urticaria: a systematic review and meta-analysis. International Journal of Surgery, 2025. PMID: 40696933.
- Acupuncture in Dermatology: An Update to a Systematic Review. Journal of Alternative and Complementary Medicine, 2021. PMID: 32955916.
Evidence note
No controlled trial of this treatment in skin conditions was identified for this entry. What is described here rests on the classical and later materia medica record and on traditional clinical use, not on controlled trial evidence, and it is not a prediction of benefit. Where skin-specific research does exist it is linked above.
Common questions
What does Dazhui do in skin practice?
It is used where the skin picture includes the conditions it is used with, always as part of a combination chosen for the pattern.
Can one point both clear heat and tonify?
Yes, and the technique decides which. Reducing clears heat and releases wind from the exterior in febrile illness. Tonifying, particularly with direct moxa, supplements Yang, most strongly in the Heart and Kidneys. The reference presents these as two distinct functions of one point rather than a contradiction.
Is needling near the spinal cord risky?
The classical records the danger plainly. The cord lies about 1.25 to 1.75 cm under the skin, and in a thin person the canal can be reached at 1.25 cun, so the needle goes in perpendicular or obliquely downward with the spine straight or slightly flexed. Numbness or electric shock into the limbs means withdrawal.