ST-25 (Tian Shu) Celestial Pivot

What does ST-25 Tian Shu do?

ST-25 Tian Shu is the Front-Mu (alarm) point of the Large Intestine — the place on the front of the abdomen where that organ's qi is said to gather — and that single classification organises everything else about the point. It sits on the Stomach channel of Foot Yang Ming, two cun to the side of the navel, directly over the large intestine itself, and the tradition treats it as the principal point for the intestines in both directions: for constipation and for diarrhoea alike.

• Regulates the intestines — the core action recorded in Sacred Lotus sources & references. "Regulates" is the operative word: ST-25 is chosen where the bowel is disordered, not where it is only slow or only loose, and the same point appears in prescriptions for opposite presentations.
• Regulates the Spleen and Stomach — its middle-burner role, following from its position on the Yang Ming channel over the abdomen.
• Resolves dampness and damp-heat — the action addressed to dysentery, damp-heat diarrhoea and the heavy, sticky presentations of the lower abdomen.
• Regulates qi and blood and eliminates stagnation — the basis of its use in abdominal pain, periumbilical pain, masses and irregular menstruation.
• Acts as a diagnostic point — like all Front-Mu points, tenderness or a palpable change at ST-25 is read as a sign referring to its organ, which is why it is palpated as well as needled.

Why "pivot" is not decoration. The name places the point at the hinge between the upper body and the lower, and the recorded actions match: ST-25 is used where the descent of the bowel has failed in one direction or run away in the other. That two-way regulating character is the point's defining feature and the thing most worth remembering about it.

Source: Sacred Lotus sources & references (channel and Front-Mu classification, existing action record); Deadman & Al-Khafaji, A Manual of Acupuncture, p. 148; Chinese Acupuncture & Moxibustion, p. 151; cross-referenced against multiple online sources.

What is ST-25 Tian Shu used for?

ST-25 is used above all for disorders of the intestines — constipation and diarrhoea both — and secondarily for abdominal pain and for gynaecological complaints of the lower abdomen. The indications recorded in Sacred Lotus sources & references fall into three groups: bowel disorders, abdominal pain and distension, and menstrual and fluid disorders.

• Constipation
• Diarrhoea
• Dysentery
• Abdominal pain and distension
• Pain around the umbilicus
• Borborygmus (rumbling of the intestines)
• Irregular menstruation
• Oedema
• Enteritis and other intestinal disorders
• Indigestion and poor appetite as a middle-burner accompaniment

Constipation and diarrhoea appearing on the same list is not an error in the record. It reflects how Front-Mu points are used: the point is selected because the organ is implicated, and the technique and the partner points then decide the direction of treatment.

Source: Sacred Lotus sources & references (existing indication record); Chinese Acupuncture & Moxibustion, p. 151; Deadman & Al-Khafaji, A Manual of Acupuncture, p. 148; cross-referenced against multiple online sources.

How is ST-25 Tian Shu used in practice?

ST-25 lies on the abdomen, two cun directly to the side of the centre of the navel — roughly two thumb-widths out from the umbilicus, on the belly of the rectus abdominis muscle. It is almost always treated on both sides, and it is one of the small handful of abdominal points a practitioner will reach for in any presentation framed as a bowel problem.

• With ST-37 Shang Ju Xu — the Front-Mu point of the Large Intestine paired with the Lower He-Sea point of the Large Intestine. This is the structured Mu-and-He combination for the large bowel, and it is also the pairing most often carried into modern trial protocols.
• With BL-25 Da Chang Shu — the Shu-Mu combination: the Back-Shu point of the Large Intestine behind, the Front-Mu point in front, one organ treated from both faces of the body. This is the oldest structured pairing in the medicine, and the two points are directly compared in the experimental literature.
• With REN-12 Zhong Wan and ST-36 Zu San Li — added where the middle burner as a whole is implicated; REN-12 is the Front-Mu of the Stomach and the Hui-Meeting point of the Fu organs, so the two Front-Mu points cover stomach and intestine together.
• With REN-06 Qi Hai and REN-04 Guan Yuan — the midline lower-abdominal points, used with moxibustion where the diarrhoea is attributed to cold and deficiency.
• With SP-15 Da Heng — the neighbouring point two cun further out on the same horizontal line, added for constipation and for abdominal pain across the belly.
• With LI-11 Qu Chi and LI-04 He Gu — the arm Yang Ming points, keeping a bowel treatment within the Large Intestine's own channel pair.

Where does ST-25 sit among the Front-Mu points?

The Front-Mu or alarm points are the twelve places on the chest and abdomen where each organ's qi is held to collect. Sacred Lotus sources & references carry the full set: LU-01 Zhong Fu for the Lungs, REN-17 Shan Zhong for the Pericardium, REN-14 Ju Que for the Heart, REN-12 Zhong Wan for the Stomach, LIV-14 Qi Men for the Liver, LIV-13 Zhang Men for the Spleen, GB-24 Ri Yue for the Gall Bladder, GB-25 Jing Men for the Kidneys, REN-05 Shi Men for the San Jiao, REN-04 Guan Yuan for the Small Intestine, REN-03 Zhong Ji for the Bladder — and ST-25 for the Large Intestine. Ten of the twelve sit on the midline or the flank; ST-25 is one of the two that sit squarely on a leg channel crossing the abdomen, which is why it belongs to the Stomach channel while collecting the qi of a different organ. Recognising that mismatch is what stops a reader assuming Front-Mu points always belong to their own organ's channel.

Source: Sacred Lotus sources & references (location, Front-Mu classification, full Front-Mu set); Deadman & Al-Khafaji, A Manual of Acupuncture, p. 148; Chinese Acupuncture & Moxibustion, p. 151; cross-referenced against multiple online sources.

Where is ST-25 located?

• A Manual of Acupuncture (p. 148): On the abdomen, 2 cun lateral to the umbilicus.
• Chinese Acupuncture and Moxibustion (p. 151): 2 cun lateral to the center of the umbilicus.

How is ST-25 Tian Shu needled, and what cautions are recorded?

Reference record only — this sets out what the standard texts document, not instruction for a reader. Sacred Lotus sources & references record perpendicular insertion of 0.7–1.2 cun at ST-25, with moxibustion noted as applicable. Deadman & Al-Khafaji record a comparable perpendicular range. ST-25 is an abdominal point, and the two cautions the reference literature attaches to it are the abdominal cautions: depth, and pregnancy.

• Angle documented: perpendicular, through the abdominal wall over the rectus abdominis.
• Depth documented: approximately 0.7–1.2 cun in the record held here; deeper needling at this point appears in specialist Chinese hospital protocols and in the trial literature, and should not be read across from the general reference figure.
• Moxibustion: documented as applicable.

Safety reference — depth over the abdomen. The published safety literature records that deep needling at abdominal points can injure underlying viscera, and that the margin is narrower in thin patients, in children, where an organ is enlarged, and where the stomach or bladder is distended. A systematic review of acupuncture-related adverse events reported in the Chinese literature found that traumatic organ injury features among the serious events recorded, and concluded that most such events followed improper technique rather than acupuncture as such (Zhang et al., Bull World Health Organ 2010;88(12):915–921C, PMID 21124716, PMC2995190). A 2024 review of acupuncture safety likewise lists abdominal organ injury among the small number of genuinely serious adverse events on record (Am J Chin Med 2024, PMID 39460372). This is why the reference depth at ST-25 is recorded as a bounded range rather than left open.

Safety reference — pregnancy. Across the reference literature the points of the lower abdomen, ST-25 among them, are routinely listed among those to be treated with caution or avoided during pregnancy. Sacred Lotus sources & references carry an explicit pregnancy caution over the neighbouring Conception Vessel points of the abdomen; the same caution is applied to ST-25 in the wider reference literature. Recorded here as reference fact.

Acupuncture is performed by qualified, licensed practitioners. This record documents what the literature states and is not a technique guide.

Source: Sacred Lotus sources & references (existing needling record); Deadman & Al-Khafaji, A Manual of Acupuncture, p. 148; Chinese Acupuncture & Moxibustion, p. 151; PMID 21124716 (PMC2995190); PMID 39460372 — each checked as active and not retracted.

What does the name Tian Shu mean?

Tian Shu means "Celestial Pivot" or "Heavenly Pivot" — tian for heaven, shu for a pivot, hinge or axis. In Chinese cosmology the body above the navel is the heavenly region and the body below it the earthly one, and the navel is the hinge between them. ST-25 sits exactly on that dividing line, which is what the name records. The classics also use tian shu for the pivot star of the Northern Dipper, the fixed point around which the sky was held to turn — an image that suits a point whose recorded function is to restore order to movement that has gone wrong in either direction.

Why does the Front-Mu classification matter at ST-25?

Front-Mu (alarm) points are where an organ's qi is said to gather and concentrate on the front of the trunk. Two practical consequences follow. First, they are diagnostic: pressure pain or a palpable change at ST-25 is taken as a sign pointing to the Large Intestine, and practitioners palpate the point before deciding whether to use it. Second, they are direct: a Front-Mu point acts on its own organ with more specificity than a general channel point, which is why ST-25 outranks its neighbours on the same channel for bowel complaints. Pairing a Front-Mu point with the matching Back-Shu point — here BL-25 Da Chang Shu — is the classical Shu-Mu combination. Note the crossing: ST-25 lies on the Stomach channel but collects the qi of the Large Intestine. Front-Mu points are assigned by anatomy, not by channel.

Is there research on ST-25?

ST-25 is one of the few acupuncture points with a research base genuinely addressed to the point itself rather than only to protocols containing it — but the two kinds of study need to be kept apart.

• Point-specific clinical evidence. A systematic review and meta-analysis restricted to acupuncture at ST-25 for functional constipation pooled ten randomised trials and 1,568 participants, and reported better Cleveland Constipation Scores and more frequent spontaneous defecation than lactulose, with a lower adverse-event rate; deep needling with a high-frequency dilatational wave performed best (Evid Based Complement Alternat Med 2020;2020:2171587, PMID 33204283, PMC7665928). This is real point-level evidence. It is also a review of predominantly single-country trials with the methodological limitations that carries, and it compares acupuncture with one laxative rather than with sham.
• Whole-protocol evidence, named as such. The largest and best-conducted trial in this field — a 15-hospital, 1,075-patient randomised sham-controlled trial in chronic severe functional constipation, which found electroacupuncture increased complete spontaneous bowel movements over eight weeks with effects persisting to week 20 — used a three-point protocol of ST-25, SP-14 and ST-37 (Liu Z et al., Ann Intern Med 2016;165(11):761–769, PMID 27618593; protocol PMID 23768191). It is strong evidence for that protocol, not for ST-25 alone, and is not presented here as the latter. The same applies to a network meta-analysis of 29 trials and 9,369 patients in diarrhoea-predominant irritable bowel syndrome, which identified ST-25 among the most commonly used points across the included protocols (PMID 29977312).
• Mechanism. ST-25 features prominently in the recent neuroscience of acupuncture because it serves as the abdominal comparator against the hindlimb point ST-36. Work published in Nature reported that low-intensity electrical stimulation at hindlimb ST-36, but not at abdominal ST-25, drives a vagal–adrenal anti-inflammatory pathway, and identified the sensory neurons responsible (PMID 34646018); companion work in Neuron reported that high-intensity stimulation at the abdomen instead engages a spinal–sympathetic pathway, establishing that where a point sits changes which system it recruits (PMID 32791039). Animal studies more directly about the point report that electroacupuncture at ST25 inhibits jejunal motility through sympathetic pathways and TRPV1 (PMID 26855542), and that ST25 shares spinal innervation segments with the colon, which is offered as the neuroanatomical basis for its bowel effects (PMID 36507334).

One retracted paper on ST-25 and BL-25 in childhood constipation circulates in search results; it is excluded here. Claims that ST-25 alone treats systemic disease are not supported by the point-specific literature.

How does ST-25 compare with the points around it?

REN-12 Zhong Wan, on the midline four cun above the navel, is the Front-Mu of the Stomach and the general point for the middle burner; ST-25 is the point of choice when the intestines rather than the stomach are the problem. SP-15 Da Heng lies two cun further out on the same horizontal line and is a local abdominal point without a Front-Mu classification. ST-37 Shang Ju Xu, below the knee, is the Lower He-Sea point of the Large Intestine and treats the same organ from a distance — it is ST-25's structural partner, not its rival. BL-25 Da Chang Shu is its Back-Shu counterpart behind. Readers should also note that Tianshu is the name of an unrelated Chinese herbal capsule studied for migraine; results for that product say nothing about this point.

Source: Sacred Lotus sources & references; Deadman & Al-Khafaji, A Manual of Acupuncture, p. 148; Chinese Acupuncture & Moxibustion, p. 151; PubMed PMID 33204283, 27618593, 23768191, 29977312, 34646018, 32791039, 26855542, 36507334 — each verified resolvable and checked for retraction status before citation; cross-referenced against multiple online sources.