Not on the belly in pregnancy.
水道 Shuidao
“Waterway” · ST28
Foot Yangming · 28 of 45
Where. On the lower belly, four finger-widths below the navel and three finger-widths out from the midline.
For. A full lower belly, difficult urination, period pain.
Press. Gentle pressure after emptying the bladder, about a minute each side.
Caution. Not on the belly in pregnancy.
水道，在大巨下一寸按 · Press with me
Six slow breaths
About a minute. Press as you breathe out, ease as you breathe in.
鄰 · Neighbouring leaves
Where Shuidao Stands on the Lower Abdomen
Shuidao occupies a quiet stretch of the lower abdominal wall. The licensed dataset places it three cun below the centre of the umbilicus and two cun lateral to the anterior midline — the vertical line running down the centre front of the trunk, through the navel itself. A cun is the traditional proportional measure of point location, taken from the person rather than from a ruler; the width of your own thumb at its base is the working approximation. Translated into landmarks: find the centre of the navel, walk straight down the abdomen about three thumb-widths, then step sideways two more. On most bodies that lands on the soft low belly between navel and pubic bone, over the vertical band of abdominal muscle or just inside its border.
The row confirms the address. The same lane, two cun wide of the midline, carries a tidy file of stations: Tianshu (ST25) level with the navel itself, then Wailing (ST26), Daju (ST27), Shuidao, and Guilai (ST29) marching downward one thumb-width at a time. Once one member is found, the rest follow by counting. Classical teaching draws the stomach channel beginning beside the nose, sweeping across the face and descending through throat and chest before crossing this stretch of abdomen on its way down the front of the thigh to the second toe — Shuidao stands among the stations of that long descent through water-country.
What lies under the fingertips shapes how this address should be treated. Below skin and soft tissue come layers of abdominal muscle and membrane, and beyond them the pelvis’s quiet tenants: the bladder, which swells upward into precisely this neighbourhood as it fills, and, in women, the womb. There is no ribcage here to interpose, as there is on the chest. Nothing about that argues against gentle surface contact for healthy adults; it simply defines the register. Fingertip work stays in skin and superficial muscle, unhurried and light, and leaves the deeper territory to trained hands. Both sides carry the point symmetrically, so whichever side you search, the mirror spot waits quietly on the other.
A Self-Palpation Walkthrough
Prepare the ground before searching. Visit the bathroom first: a full bladder rises up behind exactly this patch of wall, changes what the fingers feel, and makes every touch ambiguous — locating points here begins with an empty one. Then lie on your back with knees supported by a cushion so the abdominal wall goes soft, and warm the hands; chilled fingers meet guarded muscle. Rest the pads of the index and middle fingers just below the navel, find its centre, and walk straight down three of your own thumb-widths, placing thumbs edge to edge to keep the count honest. From that height slide sideways two further thumb-widths, away from the midline, let the fingertips settle into the soft low belly, and breathe there quietly for a few seconds before deciding anything.
A few quiet checks settle placement. Compare sides: the matching spot waits symmetrically across the midline, and most people notice a faint dull awareness at the true point while the skin half a width away stays silent. Watch the breath move the wall under still fingertips — the belly rises on inhalation and settles on exhalation, and the point rides along. Re-check the geometry too: the search lane runs parallel to the midline throughout, and the landing place should feel like part of the soft slope between navel and pubic bone without touching any bony edge. Height comes from counted thumb-widths, never from guesswork.
Three slips account for most misses. The first is slanting: the downward count must stay vertical, because even a slight diagonal carries the finger off the true lane before the sideways step ever begins. The second is loose measuring — thumbs overlapping or gapped turn three counts into two-and-a-bit; edge-to-edge placement keeps the arithmetic honest. The third belongs to this region alone: forgetting the bathroom visit and pressing against a full bladder, mistaking its firm fullness for muscle tone. If the spot feels oddly tense and rounded, stop, empty the bladder, and search again. When in doubt, return to the navel, breathe out slowly, and make the short journey once more.
Reading the Name: Waterway
The name flows in two characters. Shui 水 means water, drawn since antiquity as a stream meandering between banks. Dao 道 means road, course, way — the track a river cuts as much as the road a traveller walks, and by extension the proper route along which something should proceed. Joined, Shuidao reads naturally as the waterway: the channel along which water travels. Pinyin renders it Shuǐdào — shui carried on the third tone, which dips downward before rising again like a slow nod; dao on the fourth tone, a firm, decisive fall. The hanzi pair 水道 is compact enough to memorise at a glance, and like many point names it is less a label than a job description.
Why water imagery on the low belly? Traditional physiology assigned the movement of fluids to pathways and offices in the body’s lower storey, and classical teaching described waterways through which those fluids should pass freely. In that frame the bladder was imagined as a reservoir whose work depends on smooth passage rather than force, and stations along the lower abdomen were read as checkpoints of that flow. When passage falters, the picture predicts exactly what the records list: heaviness and distension below, water hesitant or unwilling to leave. Read this way, the name describes an office — keeper of a passage — and the recorded indications follow almost literally from it.
The catalogue keeps a whole hydrology once you look for it. Point names speak of streams, springs, ravines, fords and ditches scattered across the body map — evidence of how thoroughly the tradition read anatomy as landscape, with rivers to keep open and crossings to tend. A waterway needs no heroics: water moves when the channel is clear and stalls when it is not, which is why the practice this page teaches leans on patience, regularity, and a light hand. Even the name advises the manner of approach — you do not push a river; you keep its course clear and let it run.
Traditional Indications, Explained
The recorded indications read: distending pain of the lower abdomen, difficult urination, urinary retention, hernia, dysmenorrhea, and infertility. Framed as tradition rather than promise, the list opens with a cluster about water. Distending pain is the old records’ phrase for a lower belly that feels swollen tight, heavy, or oppressed — understood as qi and fluid stalling in the lower storey instead of moving freely. Difficult urination covers scanty, hesitant, effortful passing of water; retention goes further and describes water failing to pass at all. Classical reasoning bound these together as one disorder of passage wearing several faces — and it is worth saying plainly that sudden inability to urinate, with a full and painful belly, belongs in urgent medical care today, whatever the old books reached for.
Hernia in the classical records usually meant bulging and dragging sensations in the lower abdomen or groin, approached at stations along the channel’s course. Modern readers should treat any new lump in these regions as something for professional assessment, and a lump that turns painful, hard, or cannot be pressed back as an emergency without delay. Dysmenorrhea — painful monthly cramps — and infertility complete the list, and tradition filed them together: classical teaching associated the fluid passages of the lower storey with women’s health broadly, reading obstructed flow as a figure for obstructed ease. Difficulty conceiving, however, has many possible causes spanning both partners and always deserves proper clinical investigation; self-applied pressure is a comfort measure and must never be mistaken for a fertility treatment.
All of this is the traditional record speaking, preserved for cultural and historical understanding. These are frameworks classical practice used to organise observation, not claims that pressing the point relieves disease; nothing here replaces assessment by a qualified clinician. Where modern research touches self-applied pressure at all, reviews suggest effects are modest and context-dependent, and evidence attached to any single point remains thin. And the oldest distinction in the records still governs: symptoms that are severe, persistent, or frightening belong promptly with professional care, never with a longer pressing session.
Self-Care Acupressure at Home
With the point located, settle into the practice itself. Lying down suits this address best: knees supported, hands warm, bladder empty, shoulders heavy. Rest the pads of two or three fingers on the spot and give yourself several breaths of plain contact before adding anything. Then begin small slow circles, letting the skin travel gently over the tissue beneath — the motion belongs to the fingertip, not to pressure driving inward. Sensation should read as pleasant warmth or a mild spreading dullness, never soreness. One to three unhurried minutes per side is plenty, once or twice a day, and many people match the circles to the exhale so each revolution rides the breath out. Finish one side completely, then repeat on the other, keeping the sessions symmetrical.
Timing and manners matter more than force here. Begin each session after the bathroom, not before, and set the whole practice aside whenever the bladder feels uncomfortably full. Use finger pads only: no knuckles, elbows, or devices, no kneading the belly like dough, and no holding the breath, since breath-holding tenses exactly the wall you mean to reassure. Leave the point alone over any broken or irritated skin, and give yourself a comfortable interval after large meals as simple manners. Readers who keep a routine tend to anchor it in the evening wind-down or after a morning wash, because consistency across weeks is what self-care traditions actually reward. Intensity was never the currency here.
Keep the honest scope in view. This is a few minutes of kind attention to your own middle, a ceremony of care rather than a treatment course. Across a fortnight of gentle practice you may notice the area feels less guarded, that the daily pause becomes its own small reward, or nothing measurable at all — every one of those outcomes fits what self-acupressure genuinely offers. What does not fit is escalation: pressing harder, longer, or deeper to compel a result. The name advises the opposite posture. A waterway clears with steady tending, not with someone leaning on the bank demanding progress — and so, the tradition suggests, does the body.
Cautions and Safe Practice
Shuidao arrives with an empty caution shelf: the licensed dataset records no contraindications for it, unlike points high on the chest or at the front of the neck whose warnings fill whole entries. Geography explains part of the difference — this is soft abdominal wall, far from lungs, over tissue that yields kindly to light touch. But the pelvis’s tenants lie deeper than any self-care contact needs to reach, and an empty caution field is a statement about the record, not an invitation to force. The rules that keep surface practice safe are the same everywhere: gentleness, brevity, and immediate obedience to discomfort.
Translated into household rules: empty the bladder first and never practice against a full one; finger pads only, pressure at the level of pleasant dullness; nothing at all over broken or irritated skin, rashes, scars, hernias, or any lump you cannot account for. Skip the practice entirely during feverish illness or acute bouts of illness that demand rest or medical attention, and after recent abdominal or pelvic surgery until a clinician clears ordinary activity. Pregnant readers should not begin abdominal point work without guidance from a qualified practitioner — the general pregnancy caution carries extra weight when the point sits on the lower belly. Sharp, electric, or radiating sensation means stop at once and leave the point alone for the day.
Above the specifics stands the universal rule: this page is educational, acupressure is self-care, and neither diagnoses nor treats anything. Because this point’s portfolio touches water and women’s health, the red flags deserve saying concretely: being unable to pass urine at all, especially with a swollen, painful lower belly — seek urgent medical care immediately, do not press; blood in the urine; fever alongside urinary symptoms; severe or worsening abdominal pain; a groin lump that turns painful or hard; period pain severe enough to derail days; and difficulty conceiving, which belongs on a proper clinical pathway. Persistent symptoms belong with a licensed practitioner, medical or East Asian medical as suits the complaint. Meet the waterway lightly, and meet anything that will not settle professionally.
Shuidao — the Waterway — stands on the lower abdomen, three cun below the navel and two lateral to the midline, on the stomach channel’s long descent from face to second toe. Classical practice reached here when water seemed reluctant to move: distension below, hesitant or absent urination. This guide walks through finding it by touch and pressing it gently.
Self-care limits
Frequently asked
- How do I find Shuidao without knowing anything about cun?
- Let the navel be the entire map. Empty your bladder first, lie back, find the centre of the navel, and walk straight down the abdomen three of your own thumb-widths, keeping the thumbs edge to edge as you count. Then step sideways two more thumb-widths, away from the midline, and let the fingertips settle into the soft low belly. Cun measurements write the same landmark walk in proportional language; your thumb is the only ruler required.
- Is pressing Shuidao myself actually safe?
- For healthy adults, light fingertip contact at this site is among the gentler forms of self-acupressure: the licensed records carry no caution entry for the point, and the layers engaged are skin and superficial abdominal muscle. Respect the ordinary disciplines anyway — begin only after the bathroom, nothing over broken skin or unexplained lumps, none during fever or acute illness, after recent pelvic surgery, or during pregnancy without practitioner guidance, and an immediate stop on sharp or radiating sensation.
- What did classical practice use Shuidao for?
- The traditional record lists distending pain of the lower abdomen, difficult urination, urinary retention, hernia, dysmenorrhea, and infertility. Classical reasoning grouped the first three as disorders of the waterways stalling in the lower storey — fitting neatly with a name that pictures a channel for water — and paired the rest with the same territory. Those are traditional frameworks for understanding the body, documented for context — not evidence-backed treatment claims.
- Why does a stomach-channel point carry a water name?
- Classical channel theory draws the stomach pathway starting beside the nose and descending past throat, chest and abdomen toward the front of the thigh and the second toe. The lower-belly file of stations lines exactly the territory where the tradition located the body’s waterworks, and names record the offices kept there — Shuidao, the Waterway, among them. Naming points for rivers, passes and gates was the tradition’s habit everywhere: the body read as landscape.
- I have barely passed any urine since yesterday and my lower belly feels tight — should I press harder here?
- No — treat that combination as urgent medical care right away: unable to pass urine with a full, tight or painful lower belly can mean acute retention, which needs prompt professional treatment, not longer pressing. Self-acupressure never substitutes for assessment here. Once clinicians have evaluated and treated the cause, gentle comfort practice may resume afterwards if it still appeals, alongside — never instead of — their care.
Sources
- 01WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008), World Health Organization — nomenclature conventions.
- 02A Manual of Acupuncture, Peter Deadman, Mazin Al-Khafaji and Kevin Baker — point-name tradition and channel context.
- 03aijiu-mpvue (MIT License) licensed dataset, entry for ST28 Shuidao — location and action 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/st28/leaf.json
- GET /zh-hant/points/st28/leaf.json
- GET /zh-cn/points/st28/leaf.json
- /llms.txt — the index of every leaf
- JSON-LD in the page: MedicalWebPage, MedicalEntity and FAQPage
{
"id": "ST28",
"name": {
"en": "Shuidao",
"gloss": "Waterway",
"zh-Hant": "水道",
"zh-Hans": "水道"
},
"channel": {
"id": "ST",
"order": 28,
"of": 45
},
"location": {
"text": "On the lower belly, four finger-widths below the navel and three finger-widths out from the midline."
},
"for": [
"A full lower belly",
"difficult urination",
"period pain"
],
"press": {
"text": "Gentle pressure after emptying the bladder, about a minute each side.",
"seconds": 60,
"sides": "both"
},
"cautions": [
"Not on the belly in pregnancy."
],
"source": "Zhenjiu Jiayi Jing, book 3",
"url": "https://acupoints.com/en/points/st28",
"lastReviewed": "2026-08-24"
}