Yindu

What is KI19?

KI19 (Yindu) is a Kidney-channel point on the upper abdomen, about halfway between the navel and the base of the breastbone. Its Pinyin name, Yindu, is usually translated as "Yin Metropolis" or "Yin's Capital".

It is one of the eleven Kidney points that run up the belly in a narrow line either side of the midline. Classical texts group it with its neighbours and list it for abdominal pain, rumbling and distension, nausea and vomiting, and sometimes coughing or wheezing. It sits level with CV12, a point strongly associated with the stomach in tradition, which is part of why its traditional reputation is digestive.

Here is the honest verdict on the evidence. There is no published human research on KI19 on its own that would tell you whether pressing it does anything. Traditional standing is not evidence that a point works, and it is also not evidence that a point is safe to press; those are two separate questions, and KI19 needs care on both. The abdomen is a thin-walled area with organs and a large artery directly underneath, so the safety list on this page matters more than it would for a point on the wrist.

Everything described here is self-applied finger pressure on unbroken skin. This page does not teach needling, moxibustion or cupping, and none of those should be attempted at home.

Treat KI19 as a comfort measure you try gently alongside proper care, not as a treatment for a diagnosed condition. If you have persistent abdominal pain, unexplained weight loss, vomiting that will not settle, or a swelling you can feel in your belly, that is a reason to see a doctor rather than a reason to press harder.

Where is KI19 and how do you find it?

KI19 sits on the upper abdomen, roughly halfway between the navel and the bottom tip of the breastbone, and only about a finger's half-width out from the midline.

• Find your two bony markers. Put one fingertip in your navel and one on the small hard tip at the bottom of your breastbone, called the xiphoid process. These are the two ends of the measuring line.
• Take the midpoint. The halfway mark between them is the classical level for KI19, described in texts as 4 cun above the navel. On most adults that is about 8 to 10 cm above the navel.
• Step just off the midline. From that midpoint, move sideways about 1 to 1.5 cm, which is roughly half a thumb-width. The classical measure is 0.5 cun lateral to the midline, so KI19 stays very close in, not out over the belly.
• There are two of them. The point is paired, one on the left and one on the right of the midline at the same height.
• Check what you feel. You should be on soft abdominal wall, near the inner edge of the long rectus muscle. You should not be on the hard breastbone or on a rib.

If your torso is long or short, trust the halfway rule rather than a fixed number of centimetres. Body proportions are what the cun system is actually measuring.

A useful cross-check: many people notice a slightly firmer or more tender spot at the right level. Mild tenderness is a common guide in acupressure, but sharp or spreading pain means you have found a problem, not a point, and you should stop.

Do not confuse KI19 with ST21, which sits at the same height but roughly two thumb-widths out from the midline. If you are unsure of the exact spot, stay conservative: keep to the halfway level, keep close to the midline, and press lightly.

How do you apply pressure to KI19?

1. Get comfortable first. Lie on your back with knees bent and feet flat, or sit well supported. Bent knees soften the abdominal wall so you are not fighting tense muscle.
2. Warm your hands. Rub your palms together for a few seconds. Cold fingertips on the belly make most people brace, which defeats the point.
3. Place the flat pads of two fingers. Use the pads of your index and middle fingers, not the nail or a sharp fingertip. Flat contact spreads the load over soft tissue.
4. Sink in slowly on an out-breath. Let the pressure build over three or four seconds rather than pushing suddenly. Aim for gentle to moderate, around 3 out of 10, where you feel a dull presence and nothing sharp.
5. Hold or circle. Either hold steadily for 30 to 60 seconds, or make small slow circles for about a minute. Keep breathing normally throughout.
6. Do both sides. Treat the left and right points for the same length of time, either one after the other or together with one hand on each.
7. Keep sessions short. Two or three minutes per side, up to two or three times a day, is plenty. More pressure and more time is not better on the abdomen.
8. Release gradually. Ease off over a couple of seconds rather than lifting off suddenly.

Timing matters here. Wait at least an hour after a large meal, because pressing a full stomach often causes reflux or queasiness.

Stop immediately if you feel sharp pain, a strong pulsing under your fingers, nausea that worsens, dizziness, or any pain that spreads to your back or shoulder. A strong pulse means you are over the main abdominal artery, so lift your hand off rather than pressing through it.

Self-applied finger pressure only. Nothing on this page involves needles, heat sticks or cups.

What is KI19 traditionally used for?

• Abdominal pain and bloating. This is the main classical use for KI19, alongside rumbling noises and a feeling of fullness in the upper belly. Human research testing acupressure on this specific point for these symptoms does not exist, so the claim rests on tradition and on individual reports only.
• Nausea and vomiting. Texts list KI19 for stomach upward-rising symptoms. The evidence picture here is worth being clear about: acupressure for nausea does have decent human trial support, but almost all of it is for PC6 on the inner wrist, especially for pregnancy sickness, motion sickness and post-operative nausea. None of that evidence transfers to KI19, which has not been tested that way.
• Constipation and sluggish digestion. Abdominal points as a group appear in traditional and modern protocols for bowel function, usually combined with others such as ST25. Trials of abdominal massage for constipation exist and are mildly encouraging, but they are whole-abdomen techniques, not KI19 specifically.
• Cough and wheezing. Some classical sources list KI19 for breathlessness and cough, reflecting the Kidney channel's traditional link with the breath. There is no human evidence for this use, and nobody should rely on acupressure for asthma or any breathing problem.
• Menstrual and fertility claims. Modern popular sources sometimes attach fertility or period claims to lower Kidney-channel points and extend them upward to KI19. These are not supported by human research, and KI19 is not a treatment for infertility or painful periods.
• General relaxation. Slow, warm, light pressure on the belly combined with steady breathing is calming for many people. That effect is plausible and low-risk, but it is probably about touch and breathing rather than anything specific to KI19.

No acupressure point cures a condition, and none should replace investigation of ongoing symptoms.

Are there tips for using KI19 effectively?

• Breathe out as you press in. The abdominal wall softens on the out-breath, so you reach the right depth with far less force. Pressing on an in-breath just pushes against a rising belly.
• Use warmth instead of force. A warm palm resting over the area for a minute before you press makes the tissue more comfortable and reduces the urge to dig in.
• Measure by proportion, not centimetres. Re-check the halfway mark between navel and breastbone tip on your own body. Fixed measurements copied from a video rarely land correctly on a different torso.
• Work both sides evenly. KI19 is a paired point. Many people instinctively favour their dominant hand's side and then wonder why the two sides feel different.
• Try it before symptoms peak. If you are using it for mild upper-belly discomfort, light pressure early tends to be more tolerable than pressing on a stomach that is already cramping.
• Keep a two-week note. Write down when you pressed, for how long, and what changed within the hour. A simple record tells you more than your memory will, and it also shows you quickly when something is not helping.
• Pair it with the basics. Water, fibre, slower eating and a short walk do more for most digestive complaints than any point. Use KI19 as a small addition, not a substitute.
• Keep nails short and skin intact. Short nails and clean dry skin avoid scratches, which matter on thin abdominal skin.
• Stop at the first sharp signal. Dull and tolerable is the target. Sharp, pulsing, burning or spreading sensations are reasons to lift your hand off and leave the area alone.

Consistency over a couple of weeks of short, gentle sessions tells you more than one long, hard session ever will.

What do people get wrong with KI19?

• Expecting a cure. This is the biggest one. Acupressure on KI19 has no human evidence behind it, and treating it as a fix for reflux, IBS, infertility or asthma means a real problem goes unchecked.
• Pressing far too hard. The abdomen has no bony protection. People copy the firm pressure they would use on a shoulder and end up bruised or sore for days.
• Landing on the breastbone tip. Pushing on the xiphoid process, the small hard point at the bottom of the sternum, is painful and pointless. KI19 is well below it, at the midpoint down to the navel.
• Going too far sideways. KI19 sits only about half a thumb-width from the midline. Drifting out two thumb-widths puts you on ST21 instead, a different point on a different channel.
• Pressing straight after a meal. A full stomach plus abdominal pressure often causes reflux or queasiness. Leave at least an hour.
• Pushing through a pulse. If you feel a strong throb under your fingers, you are over the abdominal aorta. People sometimes think this means they found the point. Lift off instead.
• Ignoring new or changing pain. Using KI19 to manage belly pain that is new, severe, one-sided or getting worse delays diagnosis of things like appendicitis or gallbladder disease.
• Using it on a pregnant abdomen. Self-pressing the belly during pregnancy is not something to improvise from a video, regardless of what the tradition says about which points are safe.
• Confusing tradition with proof. A point appearing in every classical text means it has a long history, not that it has been tested.

What does the research on KI19 actually say?

No useful human research on KI19 specifically was found. There are no controlled trials, and no published case series, that test finger pressure on Yindu for abdominal pain, nausea, constipation, cough or anything else. That is the honest position, and it is the usual position for individual abdominal points.

Where KI19 appears in research at all, it is one name inside a multi-point needling protocol, often for digestive or gynaecological complaints. Those studies cannot tell you what KI19 contributes, because the point was never tested on its own and the technique was needling performed by a practitioner, not self-applied pressure.

Two neighbouring bodies of evidence are worth knowing about, so you can judge the claims you see online.

Acupressure for nausea. This is the strongest case in the whole acupressure literature, and it is specific to PC6 on the inner wrist. Multiple controlled trials and systematic reviews support a real, if modest, effect for pregnancy-related, motion-related and post-operative nausea. None of that support extends to KI19.

Abdominal massage for constipation. Several small randomised trials suggest whole-abdomen massage may modestly improve bowel frequency and discomfort. These studies used broad massage strokes, not pressure on a single point, so they do not validate KI19 either.

The general quality problem is worth stating once. Acupressure trials are usually small, short, and impossible to blind properly, because a person always knows whether they are being pressed. That means placebo and expectation effects are hard to separate from any real effect.

What this means for you: if gentle pressure on KI19 feels pleasant and you use it as a relaxation habit, that is reasonable. If you have a symptom that persists, it needs a diagnosis, not a point.