What Fengmen does
Fengmen 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
- Expels Exterior Wind
- Strengthens the Defensive Qi
- Descends Lung Qi
- Benefits the nose
Location
One and a half cun measured from the landmark shown in the diagram and the location text, lateral to the lower border of the spinous process of the 2nd thoracic vertebra (T2).
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. Start at the seventh cervical vertebra, the bone at the base of the neck that stays under the finger while the neck is bent and straightened, whereas the sixth slides forward and disappears. Two spinous processes below the seventh is the second thoracic vertebra, and the point lies one and a half cun beside its lower border. Three cun out at the same level is Fufen BL-41. The row running from Fengmen down to Baihuanshu BL-30 forms the inner branch of the bladder channel.
Deqi
De qi at this point is felt as local distension, heaviness or aching, and may travel a short way along the channel.
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: 45 degrees, oblique Depth: Standard depth half a to one cun. Direction: Needle in the direction the location describes.
Moxibustion
Moxibustion is particularly recommended at this point in the reference, with ten to fifteen minutes given, or three to seven cones for direct moxibustion. Warmth suits the preventive use, since applied over the upper back it reinforces defensive qi, and the small number of cones in the classical instruction suggests repeated gentle doses rather than one large one.
Cupping
Cupping is also particularly recommended. Suction over the upper back draws exterior wind out and moves qi that has stalled at the surface, and the reference names cupping beside the tonifying method as a way to strengthen defensive qi. Because the lung lies underneath, suction over the muscle is preferred to deep needling in a thin chest wall.
Gua sha
The reference marks gua sha as particularly recommended at Fengmen, which follows from the location: the upper back is broad, flat and easy to work. Strokes run downwards on either side of the spine, over muscle rather than over the bony processes, and the skin is checked as the work goes on rather than at the end.
Skin uses
Fengmen is named the gate through which Wind enters and exits, and it is recorded to expel exterior Wind and strengthen the defensive Qi. Of the points here, its traditional link to the surface is the most direct, because defensive Qi is described as the layer that guards the body against external factors. Where the picture is a recent, superficial reaction to Wind or cold, the recorded action is the basis for considering it. Because no skin-specific classical indication is recorded for the point, the connection above is an indirect rationale, 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
Fengmen is the gate through which Wind enters and exits.
Classical citation for this point.
It is needled to a depth of five fen, the needle retained for the duration of five exhalations, and it is moxaed with five cones.
Zhenjiu Jiayi Jing on the technique for Fengmen, which ties the time of retention to the breath and gives a small number of cones for 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. Because the point lies over the chest, the pleura and the lung sit directly beneath it, and the reference is emphatic that a perpendicular insertion, or a needle angled away from the midline, can cause a pneumothorax. Needle obliquely towards the spine at about 45 degrees, or almost flat at 10 to 15 degrees, and keep within the depth given. Thin patients have less tissue between skin and pleural lining, so the safe depth is smaller and the angle flatter in them.
Deficiency and constitution
In a depleted patient the point is worked gently and briefly. Where the point is used to build defensive qi rather than to clear wind, the reference asks for a tonifying method or for cupping in place of reducing, so stimulation is lighter and the intention is support rather than dispersal.
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 Fengmen 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.
How is it needled?
45° (Oblique) / 10-15° (Transverse). Standard depth 0.5 - 1.0 cun. De qi: Local distension and soreness spreading across the upper back. Sensation may radiate toward the spine or laterally across the scapular region. With proper technique, patients often feel warmth spreading through the upper back area.
Is it safe?
Dangerous point - requires extra caution Deep needling contraindicated - shallow insertion only Needle Depth 0.5 - 1.0 cun Needle Angle 45° (Oblique), 10-15° (Transverse) Body Area Back - Upper (Thoracic)
Why is Fengmen called the wind gate?
Huiyuan Zhenjiu Xue describes it as the gate through which wind enters and leaves the body, and the name follows from that image. Because the upper back is the first area that wind and cold are said to strike, a point at the level of the second thoracic vertebra was given the task of closing the door again, both while wind is present and before the next exposure.
Is it a dangerous point?
It is marked as one in the reference, and the reason is anatomical rather than classical. The lung and its pleural covering lie immediately beneath the point, so a needle sent straight down can puncture them. The safe approach is a shallow oblique or transverse insertion towards the spine, with the depth reduced in anyone who is thin, and the arrival of qi rather than depth tells the practitioner the point has been reached.
Can cupping replace needling here?
For the preventive use the reference treats cupping as a direct alternative, naming it beside the tonifying method as a way to strengthen defensive qi. Suction over the upper back carries none of the risk of a needle reaching the pleura, which makes it a reasonable choice for repeated sessions in a patient who catches colds easily.