Shimen

What is CV5?

CV5 (Shimen) is a point on the Conception Vessel, sitting on the midline of the lower belly about two thumb-widths below the navel.

Its pinyin name, Shimen, is usually translated as Stone Gate. In Chinese medicine it is the front-mu point of the San Jiao, or Triple Burner, the system traditionally said to handle the movement of fluids through the body. Older texts group it with the lower-abdomen points used for menstrual complaints, swelling and urinary trouble.

Two things are worth saying once, up front. A point being ancient and taught in every curriculum tells you it has traditional standing. It does not tell you the point works, and it does not tell you the point is safe for you.

The honest verdict on evidence: there is essentially no human research testing CV5 on its own. Where it appears in studies, it is one of several points in a larger protocol, usually needled by a practitioner, so no effect can be pinned on this point. Self-applied finger pressure on CV5 has not been tested in any way we can point you to.

CV5 also carries a specific safety rule that matters more than any of its claims. Do not press CV5 if you are pregnant or think you might be. Every teaching tradition places the lower-abdominal Conception Vessel points on the avoid list in pregnancy, and that instruction stands whether or not the underlying theory is correct. If a point like this is ever used around labour, that is a decision for your midwife or doctor to make and carry out, never something to try on yourself.

Everything described on this page is gentle pressure from your own fingers. Nothing here involves needles, heat, suction or anything that breaks the skin.

Where is CV5 and how do you find it?

CV5 sits on the midline of your lower abdomen, two thumb-widths (roughly 4 cm) straight below the centre of your navel.

• Lie down first. Rest on your back with your knees bent and feet flat. The belly wall softens, and the midline becomes much easier to feel than when you are standing.
• Find your two anchors. Put one fingertip in your navel. Put the other on the top edge of your pubic bone, the firm ridge low in the front of your pelvis. CV5 lies on the straight line between them.
• Measure down from the navel. Classical texts place CV5 two cun below the navel. One cun is roughly the width of your own thumb at the knuckle, so measure two thumb-widths down the midline.
• Cross-check the proportion. The gap from navel to pubic bone counts as five cun in the traditional system. CV5 falls about two-fifths of the way down that gap, a little above the halfway mark.
• Stay on the midline. The point is on the central line itself, not off to either side. You are over the soft vertical seam between the two belly muscles, not on the muscle bellies.

Expect to land in a soft, slightly yielding spot rather than on anything hard. CV5 has close neighbours: CV7 is one thumb-width below the navel, CV6 about one and a half, and CV4 three. A centimetre either way lands you on a different point, so if precision matters to you, measure rather than guess.

Many people feel nothing special at CV5, and a few feel a mild dull heaviness. Neither sensation confirms or rules out the right spot. Sharp pain, a pulsing beat under your fingers or a firm lump is a reason to take your hand away and have the area checked.

How do you apply pressure to CV5?

1. Check the rule first. Do not press CV5 if you are pregnant or think you might be. Skip it as well if you have had recent abdominal surgery, a hernia in that area, or belly pain no one has diagnosed.
2. Pick a sensible moment. Wait at least an hour after a large meal, and empty your bladder beforehand. Pressing a full bladder or a full stomach is uncomfortable and tells you nothing useful.
3. Get set up. Lie on your back with knees bent. Warm your hands. Loosen anything tight at the waistband so the belly wall can relax.
4. Locate and settle. Place the flat pad of your index or middle finger on CV5, on the midline two thumb-widths below the navel. Use the pad, not the nail, and keep the finger relaxed.
5. Press slowly and lightly. Sink in over three or four seconds until you feel firm contact and a mild dull pressure. On a soft abdomen that is far less force than you would use on a shoulder. Aim for about three out of ten on a discomfort scale.
6. Hold with your breath. Keep steady pressure for 30 to 60 seconds, breathing slowly. Let the pressure ease a little as the belly rises on each in-breath rather than fighting it.
7. Release and repeat. Come off slowly over a few seconds. Rest for half a minute, then repeat up to three times. Two to three minutes in total is plenty for one session.
8. Keep the frequency modest. Once or twice a day is enough. There is no evidence that more pressure, longer holds or more sessions do more.

Stop straight away if you feel sharp pain, a pulsing throb, nausea, dizziness or any pain that spreads elsewhere. Stop also if the skin reddens, bruises or feels tender afterwards. Use fingers only. Do not use hard tools, body weight or anything that breaks the skin.

What is CV5 traditionally used for?

• Period pain and irregular cycles. Tradition treats the lower Conception Vessel points as the main group for menstrual complaints, and CV5 is listed among them. Human evidence for acupressure in period pain comes from small, mostly unblinded trials of multi-point routines centred on SP6 and other points, not on CV5. Nothing lets us say what CV5 contributes.
• Fluid retention and swelling. As the front-mu point of the San Jiao, CV5 is classically linked to how the body moves and clears fluid, and older texts list it for oedema (fluid swelling) and a bloated lower belly. There is no human trial testing finger pressure at CV5 for swelling of any cause.
• Difficult or uncomfortable urination. Classical indications include urinary retention and a dragging feeling low in the abdomen. This is traditional reasoning only. Trouble passing urine is a medical problem and needs assessment, not pressure.
• Lower abdominal aching and bloating. Many people find slow, warm hand pressure on the lower belly soothing in the moment. That is a real and pleasant effect, but it is general comfort from touch and warmth, and it is not specific to CV5 or to any point.
• Postnatal and gynaecological complaints. Historical sources mention CV5 for bleeding and discharge after childbirth. Any bleeding that worries you after birth is an urgent medical matter, and that is where it should go.
• The infertility lore. An old and well-known tradition holds that stimulating Shimen can make a woman infertile, which is why some schools avoid it in anyone hoping to conceive. There is no evidence that this happens and no evidence that it does not. Tradition simply advises staying off the point, and that is easy enough to follow.

Across all of these, the honest summary is the same: the claims are traditional, the testing has not been done, and an effect may well be nothing more than relaxation and the comfort of a warm hand.

Are there tips for using CV5 effectively?

• Pregnancy is an absolute stop. Do not press CV5 if you are pregnant or think you might be. If you are trying to conceive and your period is late, leave the point alone until you know.
• Leave labour to professionals. If anyone suggests lower abdominal points around birth, that is a call for your midwife or doctor, not something to try yourself at home.
• Measure, do not eyeball. CV7, CV6, CV5 and CV4 sit within a few centimetres of each other. Use your own thumb-width as the unit, since body proportions differ.
• Warm the area first. A warm hand, a shower or a covered heat pack for a few minutes relaxes the belly wall. Most people then need far less pressure to feel anything at all.
• Keep it light. The abdomen has no bony floor under it. Light, patient contact is appropriate here; digging in is not.
• Empty the bladder. Pressure low on the midline over a full bladder is uncomfortable and may make you feel an urgent need to go.
• Breathe out as you sink in. Pressing on an exhale is more comfortable, and slow breathing may do as much for cramping discomfort as the point itself.
• Give it a fair, short trial. Try it over two or three cycles or a couple of weeks, and note what changed. If nothing has, stop rather than drifting on out of habit.
• Track alongside, not instead of. If you are managing period pain or bloating, keep up whatever your doctor has advised. Acupressure sits beside treatment, never in place of it.
• Stop at the first odd sign. Sharp pain, a pulse under your fingers, nausea or spreading pain all mean hands off and a medical opinion.

What do people get wrong with CV5?

• Using it in pregnancy. This is the big one. Do not press CV5 if you are pregnant or think you might be. Online videos about belly points rarely mention this, and the omission is their mistake, not a sign it is safe.
• Confusing it with its neighbours. CV5 is two thumb-widths below the navel. People regularly describe CV4 or CV6 under the CV5 label, because the points are barely a finger apart.
• Pressing far too hard. There is no bone behind the lower abdomen. Heavy pressure can bruise, and it adds nothing. Mild dull pressure is the ceiling.
• Expecting a cure. No acupressure point cures period pain, infertility, bloating or urinary problems. Expecting that sets you up for disappointment and can delay real treatment.
• Pressing undiagnosed belly pain. New, severe or one-sided abdominal pain needs a diagnosis. Pressing on it can mask a changing picture and wastes time that matters.
• Using it over the wrong skin. Avoid pressing over broken skin, a rash, a fresh surgical scar, a hernia bulge or any lump you have not had checked.
• Treating tradition as a safety test. Centuries of use is not a safety study. The pregnancy rule exists precisely because tradition itself flagged a risk here.
• Taking an old warning too far. The classical infertility lore about Shimen is often repeated online as fact. It is not proven. It is a good reason to skip the point if you are trying to conceive, and no reason to panic over a single light press.
• Replacing medication. People sometimes drop painkillers, hormonal treatment or diuretics after reading about CV5. Change nothing without talking to your prescriber.
• Overdoing the schedule. Long daily sessions do not improve the odds. A few minutes once or twice a day is the sensible ceiling.

What does the research on CV5 actually say?

We could find no useful human research testing CV5 on its own, for any condition, by needle or by finger pressure.

What does exist sits one step removed. Trials of acupuncture and acupressure for period pain, bloating and urinary symptoms often use a fixed set of lower abdominal and leg points chosen by a practitioner. CV5 sometimes appears inside those sets. When a mixed protocol shows a result, there is no way to tell which point mattered, or whether any single point mattered at all.

The wider acupressure literature has a familiar shape, and it applies here. Most studies are small, run for a short time, and cannot blind participants, because people know whether they are being pressed. Comparison groups are often no-treatment or usual care rather than a convincing sham. That combination tends to flatter the treatment, so modest reported benefits should be read cautiously.

One point is a genuine exception and is worth naming for contrast. PC6 on the inner wrist has repeatedly been tested in controlled human trials for nausea and vomiting, including after surgery and in pregnancy sickness, and the evidence there is reasonably good. That is what decent evidence for an acupressure point looks like. CV5 is nowhere near it.

What this means in practice is simple. If you press CV5 gently and feel more comfortable, that is a real experience and worth having. It is not proof that the point did it, since warmth, slow breathing, lying down and attention all help on their own. Any claim you meet that CV5 regulates hormones, clears fluid or restores fertility is going well beyond what has been shown.

If a specific symptom is what brought you here, that symptom deserves a diagnosis. Acupressure is a low-cost thing to try alongside proper care, and a poor substitute for it.