大都 Dadu
“Great Capital” · SP2
Foot Taiyin · 2 of 21 · ying-spring
Where. On the inner edge of the foot, just in front of the big-toe joint, where the top skin meets the paler sole.
For. Bloating, stomach ache, cold hands and feet.
Press. Thumb pad, small slow circles, one minute each foot; not hard on the joint.
Dadu — literally “great capital” — waits on the inner edge of the foot, in a shallow hollow just past the knuckle where the big toe joins the arch, on the faint line where pale sole skin meets darker top-of-foot skin. Classical practice kept this small spring point close for bloated middles, stomachache, and vomiting. This guide walks through finding it by touch and pressing it safely.
按 · Press with me
Six slow breaths
About a minute. Press as you breathe out, ease as you breathe in.
鄰 · Neighbouring leaves
Where Dadu Sits on the Inner Foot
Turn your attention to the inner border of the foot — the side where the big toe faces its partner — and you are looking at Dadu’s neighborhood. The dataset places it distal and inferior to the first metatarsophalangeal joint, at the junction of the red and white skin. Each term decodes into something visible. The first metatarsophalangeal joint is simply the knuckle at the root of the big toe, where the toe bends against the long bone of the arch. Distal means toward the tip of the toe rather than back toward the ankle; inferior means down the inner slope toward the sole. And the junction of the red and white skin is the traditional name for the soft boundary line where the paler, thicker skin of the sole-side gives way to the thinner, deeper-toned skin over the top of the foot — a colour shift you can usually trace with your eyes before touching anything.
What lies beneath the skin here asks for a gentle hand. The hollow sits just past the rounded crest of the joint capsule, with thin tissue only between it and the surface; the strong tendon that bends the big toe runs beneath along this corridor, and fine sensory nerves crowd the region because feet, like fingers, are built to report the ground in detail. That density works in acupressure’s favour: sensation arrives early, long before force could matter, which makes heavy pressure pointless as well as unkind. A spot this close to a working joint rewards patient, featherweight contact and answers nothing to jabbing.
Neighbors confirm the address. Counting up the inner border from the tip of the big toe, the channel opens at Yinbai (SP1), which hugs the medial corner of the toenail; the next substantial hollow beyond the knuckle crest, on the toe-facing side of the joint, is Dadu; and passing behind the joint toward the ankle brings you to Taibai (SP3), which the records place posterior and inferior to the same joint. Notice the elegant symmetry in the official language: SP2 sits on the far side of the great knuckle, SP3 on the near side, both resting along the red-and-white boundary. Once you can find the knuckle and that boundary line, you hold the map for all three points at once.
A Self-Palpation Walkthrough
Settle somewhere comfortable and give the located leg a stable perch — cross that ankle over the opposite knee, or rest the foot flat and let it roll gently inward so the inner border faces you. With the other hand, find the knuckle at the root of the big toe: flex the toe up and down once and feel where it moves. Slide your exploring thumb or finger onto the inner side of that knuckle, walk it forward over the rounded crest toward the toe, and let it settle into the shallow dip just beyond the crest, dropping slightly toward the sole. Check the address twice: the spot should lie on the faint colour boundary where sole skin yields to upper-foot skin, on the toe side of the joint. That dip, on that edge, along that line, is the whole of the location.
Two quiet confirmations earn their keep. First, compare sides with feather-light taps: many people notice a faint, dull awareness at the true point and almost nothing a few millimeters away. Second, change the toe’s posture — curling it downward pushes the joint crest up and tends to deepen the hollow into something your finger can clearly rest in, while straightening the toe lets everything soften again. If your fingertip finds a hard ridge instead of a dip, you are probably sitting on the crest of the joint itself; ease a touch further toward the toe or slide fractionally toward the sole and search again. None of this probing should hurt — discomfort during location usually means too much pressure rather than the wrong place.
Common slips are predictable. Landing behind the joint, toward the ankle, strays into Taibai’s territory, which is the wrong side of the knuckle for this exercise; the classic tell is that the spot feels squarely on the arch rather than beside the toe root. Drifting up onto the top of the foot leaves the colour boundary and climbs into thinner, more sensitive skin. And using a fingernail instead of the pad turns a gentle search into a poke, so trim nails and let the fleshy pad do the work throughout. When confusion wins, shake the foot loose, set it down again, and begin once more from the knuckle; the landmark has never moved.
Reading the Name: Great Capital
The name reads like a proclamation. Da 大 means big or great — the character’s oldest form is usually described as a picture of a person standing with arms spread wide, largeness drawn in a single stroke-set. Du 都 carries the sense of a capital city, a metropolis: the place where an administration resides and where people and goods gather in abundance. Together, Dadu announces itself as the great capital. Pinyin writes it Dàdū, a falling fourth tone on da and a high, level first tone on du. The two characters 大都 are plain enough to memorise at a glance, and like so many channel points named for human geography — gates, markets, valleys, courtyards — the metaphor does real work rather than decorating.
A second layer belongs to point classification. Classical teaching organises the points nearest the fingers and toes into five offices per channel, named for water gathering force downhill: a well, a spring, a stream, a river, and a sea. Dadu holds the spring office of the spleen channel — the stage where the flow, having surfaced at the well point Yinbai, gathers into something lively but still young. Classical five-phase teaching, as carried in standard references such as A Manual of Acupuncture, assigns the spring points of the yin channels to the fire phase; and the spleen channel belongs to earth, the phase that fire traditionally generates. Within that old arithmetic this small point therefore occupies a warm, motherly station on its own channel — fire feeding the very earth it serves. It is a lens for reading the tradition, not a laboratory finding.
The imagery repays attention. A capital is where scattered traffic converges and becomes civilization; a spring is warm-blooded, quick, and constant. Set against its neighbor — Hidden White, the tiny, retiring well point at the nail corner — Dadu marks the moment the channel’s story turns outward and populous, and commentators through the centuries enjoyed the contrast between the whisper of the first point and the bustle of the second. The old aphorism, paraphrased rather than quoted, taught that spring points answer hot states, which helps explain why febrile illness stands in this point’s recorded portfolio alongside purely digestive complaints. The name, once again, doubles as instructions.
Traditional Indications, Explained
The recorded indications read: abdominal distension, stomachache, vomiting, diarrhoea, constipation, febrile disease without sweating, cold hands and feet, and pain of the toes. The first five form a single family in the traditional frame. Classical practice paired the spleen with the stomach as the middle burner’s great working partnership, charged with transforming food and transporting fluids; when that partnership faltered, the records describe a recognisable cluster — a abdomen swollen with trapped fullness, dull ache around the stomach, contents refusing to stay down or hurrying through too fast, or the opposite stall of nothing moving at all. Distension deserves its own note: it meant a subjective ballooning, a sense of blockage and pressure, rather than visible disease. One small point near the channel’s start was consulted for the whole unruly household of mid-body complaints.
The remaining entries arrive by different doors. Febrile disease without sweating is the umbrella the old records spread over feverish illness, and the without-sweating clause mattered to them: a body burning with pores shut was read differently from one already releasing heat. Spring-point doctrine — the association of this class of points with hot states discussed above — is the traditional reason such an entry appears here at all. Cold hands and feet looks like the opposite complaint until the traditional logic is traced: warmth in the far reaches was understood to depend on the middle burner moving qi and blood smoothly, so when digestion flagged, extremities were described as losing their share of the hearth-fire, and practice reached for points that support the middle. Pain of the toes, finally, follows the plainest rule in the tradition — a point treats its own doorstep — since Dadu sits right at the root of the great toe.
It bears saying plainly: these are the traditional uses recorded in a licensed dataset and classical literature, offered here for cultural and historical understanding. They are not claims that pressing this point treats any condition, and nothing in this guide substitutes for assessment by a qualified clinician. Where modern research has touched self-applied acupressure at all, reviews suggest effects tend to be modest and dependent on context, and evidence specific to any single point remains sparse. Hold the tradition lightly and the safety rules firmly, and the two will never collide.
Self-Care Acupressure at Home
With the point located by the walkthrough above, settle into position: seated, the located ankle resting where you can reach it without hunching. Bring the pad of your opposite thumb or index finger onto the hollow and begin with bare contact — a few unhurried breaths carrying no pressure beyond the weight of the finger itself. Then add small, slow circles, letting the skin glide over the tissue rather than grinding against the joint beneath. Aim for a pleasant dullness, perhaps a mild warmth spreading along the inner foot; any sharpness anywhere in the experience is a cue to lighten or stop. A common home rhythm is one to three minutes per side, once or twice daily, with the pressure riding gently on each exhale. Swap sides and give the other foot its turn, keeping the two sessions symmetrical.
Feet ask for particular kindness. Skin over a working joint is thin, the structures beneath sit close, and a foot that has spent the day in shoes arrives guarded — so halve whatever pressure feels normal elsewhere, warm your hands first, and consider warming the foot too with a brief walk or a covered rest before starting. Quality beats duration: two minutes of genuinely light, attentive contact serves the practice better than ten absent-minded ones. Many people anchor the routine to an existing habit — the evening shoe-off moment, a winding-down pause on the sofa — because regularity, not intensity, is what self-care traditions actually request.
Treat the minutes as a small ceremony of attention rather than a treatment session. Across weeks you may notice the area feeling less tender, the toe moving more freely, or simply that you spent ninety seconds attending to a part of yourself that carries you all day — every outcome inside the honest scope of self-acupressure. What falls outside it is escalation: pressing harder, longer, or more sharply to force a result. Curiosity that pulls that way is best answered by returning to gentleness, or by closing the practice for the day. The point has waited centuries already; it can wait until tomorrow.
Cautions and Safe Practice
The licensed dataset records no special cautions for this point, and it is worth stating that plainly — together with what it does not mean. An empty caution column is not an invitation to force. Thin skin over a small working joint, tendons traveling just beneath, and densely packed sensory nerves mean this neighborhood rewards exactly the light, purely superficial contact this page recommends everywhere else, and it punishes jabbing. Never press hard onto the joint crest, never work with a tool or device, and never push sensation beyond pleasant dullness.
Conservative defaults cover the rest. Skip the point entirely over cuts, blisters, cracked or peeling skin, athlete’s foot, ingrown or inflamed nail folds, warts, or any broken skin along the inner border of the foot; leave it alone while a toe or foot injury heals, and after recent foot surgery until ordinary walking feels comfortable again or a clinician clears it. If this exact joint is hot, swollen, or acutely painful — as happens in gout flares and arthritic episodes, which have a famous fondness for the big-toe root — press nowhere near it and let the inflammation settle first. Sharp, electric, or radiating sensation means stop at once and do not retry that day. Pregnant readers, and anyone living with diabetes, reduced foot sensation, or poor circulation, do best to consult a qualified practitioner before adding any new point practice. When in doubt, ask first; the question costs nothing.
Red flags outrank routines. Persistent vomiting, severe or worsening abdominal pain, blood in the stool, a true or high fever — especially in a young child — and hands and feet gone numb or persistently cold all call for prompt medical assessment, not a pressing schedule. And the standing rule above everything: this page is educational, self-acupressure is comfort-oriented daily care rather than diagnosis or therapy, and persistent symptoms belong with a licensed practitioner. A hollow by the big toe makes a poor clinic; save the real clinics for the professionals who staff them.
Self-care limits
Frequently asked
- How do I find Dadu without knowing anything about cun?
- Use the big-toe knuckle as the entire map. Flex the toe to feel the joint at its root, come onto the inner edge, walk just past the rounded crest toward the toe, and settle into the shallow dip there, checking that the faint colour boundary between sole-side and upper-foot skin runs through the spot. Nothing needs measuring: the cun language in formal locations encodes the same landmarks proportionally.
- Is pressing so close to the big-toe joint really safe?
- Gentle fingertip pressure held on intact skin is generally reasonable self-care for healthy adults, because the technique engages skin and superficial tissue far short of anything a joint would mind. The realistic risks come from hard or repeated jabbing on a small working joint, or pressing through broken or inflamed skin — categories this practice simply excludes. Respect the stop signals: sharp pain, radiating sensation, or discomfort that worsens all mean finish immediately.
- What did classical practice use Dadu for?
- The traditional record lists abdominal distension, stomachache, vomiting, diarrhoea, constipation, febrile disease without sweating, cold hands and feet, and pain of the toes. Classical frameworks explain the grouping: the spleen channel was read as steward of the middle burner’s digestion, spring-point doctrine linked this class of points to hot states, and local pain answered at local points. Those are traditional ways of mapping the body, documented for context — not evidence-backed treatment claims.
- Why would a tiny point by the big toe relate to digestion at all?
- In classical channel theory the spleen meridian opens at the inner side of the big toe and climbs the inner leg all the way to the chest, and the organs it serves were read along that whole route. Points near a channel’s start were treated as speaking to territory far downstream — a geography of correspondence, not of plumbing. Five-phase teaching adds its own layer, assigning this spring point to the fire that traditionally generates the spleen’s earth. Helpful lenses for the literature, distinct from anatomical cause and effect.
- Can acupressure at Dadu take the place of seeing a doctor?
- No. Self-acupressure offers comfort, not diagnosis, and ongoing vomiting, severe or worsening belly pain, blood in the stool, true fever, or persistently cold or numb extremities need professional assessment promptly. Picture two floors of one building: daily self-care lives downstairs, and clinical medicine keeps the consulting room upstairs for when symptoms persist or escalate. Neither replaces the other, and the downstairs tenant should always send serious matters upstairs.
Sources
- 01WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008), World Health Organization — location conventions.
- 02A Manual of Acupuncture, Peter Deadman, Mazin Al-Khafaji and Kevin Baker — point-name tradition, five-phase spring-point classification, and channel context.
- 03aijiu-mpvue (MIT License) licensed dataset, entry for SP2 Dadu — location, point class, actions, and caution record.
Last reviewed
牌記This leaf, for machines
Old books ended with a colophon saying who printed them. Every leaf here carries the same facts as structured data for agents and search, with no layout in the way.
- GET /en/points/sp2/leaf.json
- GET /zh-hant/points/sp2/leaf.json
- GET /zh-cn/points/sp2/leaf.json
- /llms.txt — the index of every leaf
- JSON-LD in the page: MedicalWebPage, MedicalEntity and FAQPage
{
"id": "SP2",
"name": {
"en": "Dadu",
"gloss": "Great Capital",
"zh-Hant": "大都",
"zh-Hans": "大都"
},
"channel": {
"id": "SP",
"order": 2,
"of": 21
},
"location": {
"text": "On the inner edge of the foot, just in front of the big-toe joint, where the top skin meets the paler sole."
},
"for": [
"bloating",
"stomach ache",
"cold hands and feet"
],
"press": {
"text": "Thumb pad, small slow circles, one minute each foot; not hard on the joint.",
"seconds": 60,
"sides": "both"
},
"cautions": [],
"url": "https://acupoints.com/en/points/sp2",
"lastReviewed": "2026-08-24"
}