What Xinshu does
Xinshu 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
- Calms the Mind
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 5th thoracic vertebra (T5).
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. Counting begins at the seventh cervical vertebra, which stays palpable while the neck is flexed and extended, whereas the sixth slides forward and disappears. Five spinous processes below that is T5. Another route is to find T3 at the level of the inner end of the scapular spine with the arms hanging, then count two levels down. The point lies 1.5 cun beside the lower border of the T5 spine. Shentang BL-44 shares the same level a further 1.5 cun out, and the run from Fengmen BL-12 to Baihuanshu BL-30 belongs to 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
The classical records 10 to 15 minutes of moxibustion at this point. It turns to moxa where the Heart needs support rather than clearing, and it names direct moxibustion beside a tonifying method as the way to nourish the Heart in Yin deficiency, so the choice of warmth follows the same excess and deficiency distinction as the choice of needling method.
Skin uses
Xinshu is the back-shu point of the Heart, recorded to calm the Mind, and its classical passages describe heart Qi disorder, confusion and epilepsy rather than any skin sign. The skin reading is indirect: where a skin picture is described as driven by agitation, poor sleep or a disturbed spirit, the recorded action of settling the Heart is the traditional basis for considering the point alongside the pattern. Its position on the upper back also lies near the surface of the trunk. Its sources contain no skin-specific classical indication, so the rationale above remains indirect and is 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
Heart Qi disorder, confusion and disorientation, madness with running about, and epilepsy.
Classical citation for this point.
The chapter sets out where the Heart's Back-Shu lies and gives the method of locating the back transporting points by measurement from the nipples.
Lingshu (Spiritual Pivot), chapter on the Back Transporting points, as recorded in the reference
Xinshu clears Heat from the five Zang when it is used together with the other Back-Shu points, the Heart being the sovereign fire that governs Heat in the whole body.
Leijing Tuyi (Illustrated Appendices to the Classic of Categories), as recorded in the reference
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 point sits over the upper thorax, above the pleura, so the reference marks it as unsafe for deep needling. Work obliquely towards the spine at about 45 degrees, or almost flat at 10 to 15 degrees for a transverse approach, and keep the shaft within 0.5 to 0.8 cun. Never needle straight down, and never angle the tip away from the midline. In thin patients the intercostal spaces are shallower and the pleural lining lies closer to the skin, so the depth is reduced further.
Deficiency and constitution
In a depleted patient the point is worked gently and briefly. In a deficiency picture the reference does not reduce at all: it applies a tonifying method, or direct moxibustion, so that the point supplements the Heart instead of clearing it.
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 Xinshu 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.
Is it safe?
Dangerous point - requires extra caution Deep needling contraindicated - shallow insertion only Needle Depth 0.5 - 0.8 cun Needle Angle 45° (Oblique), 10-15° (Transverse) Body Area Back - Upper (Thoracic)
Is Xinshu used for the emotions or for the heart itself?
For both. The reference treats it as a point for the Heart as an organ and for the Shen that the Heart houses, so it appears in pictures with palpitations and chest pain as readily as in anxiety, weeping, sleeplessness and low mood. What decides which effect is sought is the needling method, reducing where Heat is excess and tonifying where the Heart is deficient.
Why does the needling method matter so much at this point?
Because the same point is asked to do opposite jobs. A reducing method clears Heart Fire and Empty Heat so that agitation, fright and sleeplessness settle, while a tonifying method or direct moxibustion nourishes the Heart and is used for poor memory, mental confusion and delayed speech in children. The reference is explicit that the technique, and not the point on its own, sets the direction of the treatment.
Why must Xinshu only be needled shallowly?
It lies over the upper rib cage, so a needle taken too deep, or angled away from the midline, can enter the pleural space and cause a pneumothorax. The reference limits the depth to 0.5 to 0.8 cun, asks for an oblique or transverse direction towards the spine, and warns that thin patients have shallower intercostal spaces, which leaves less margin for error.