BL28 Pangguangshu (Bladder Shu Point)

Location

1.5 thumb widths lateral to the du mai at the level of the 2nd posterior sacral foramen.

Cautions

Avoid deep perpendicular needling.

Indications

Conditions for which BL28 is listed as indicated. An indication list is a reference index, not a prescription – see the protocols below for sourced treatments.

Muscle WastingLeg Muscle WastingConstipationDamp ItchinessQi DeficiencyPenis Swelling DeficiencyDeficiency-swelling PenisDiarrheaDefecation ProblemsUrinary Problems BedwettingFibroids / MassesFibroids MassesFibroids / Masses Jia Ju AbdomenFibroids Masses Jia Ju AbdomenFibroids / Masses Ji HardFibroids Masses Ji HardFibroids / Masses JuFibroids Masses JuAbdominal FullnessHeaviness LegSitting For Long StiffnessImmobility Sitting For LongLeg Numbness Abdominal Pain Buttock Pain Coccyx PainGenitals External PainSacrum PainLumbar Spine PainVagina PainUrinary Retention Sciatica Stagnation SwellingDamp Heat Jiao Lower SyndromeDamp-heat Jiao Lower SyndromeThirsting ExcessiveUlceration GenitalsUrination Irregular FlowPainful UrinationUrine CloudyUrine Dark

TCM actions

What classical sources say BL28 does in the terms of Chinese medicine theory. These describe the point, not a condition.

Benefit Back LumbarBenefit LegsBenefit Legs InferiorBenefit Regulate BladderRegulate Bladder

Protocols using BL28

The 50 best-sourced of 58, ranked by strength of evidence. The count above is the full figure.

Urinary Retention, Urination Difficulty, Abdominal Distending Pain – SP06, SP09, BL23, BL28, BL32, BL39, CV02, CV03, CV04 (doi:10.1016/s0254-6272(08)60020-5 ↗)
Urinary Retention, Incomplete Bladder Emptying, Stroke Sequelae – SP06, BL28, BL32 (doi:10.2147/CIA.S37531 ↗)
Enuresis Nocturnal, Bedwetting – ST36, SP04, SP06, SP12, HT07, HT09, BL23, BL28, BL32, KD03, KD05, CV02, CV03, CV06, GV04, GV15, GV20 (doi:10.1177/147323000303100611 ↗)
Incontinence Urinary Stress, Incontinence Urinary Mixed, Incontinence Urinary Urgency – SP03, SP06, BL14, BL18, BL20, BL23, BL28, BL31, BL32, BL33, BL34, KD03, KD07, PC06, LV03, CV03, CV04, CV06, GV04, GV20 (doi:10.1136/acupmed-2015-010828 ↗)
Spinal Cord Injury, Bladder Dysfunction Neurogenic, Urinary Retention Chronic – SP06, SP09, BL23, BL28, CV02, CV03, CV04, CV06 (doi:10.1155/2016/9245186 ↗)
Spinal Cord Injury, Bladder Dysfunction Neurogenic, Urinary Retention Chronic – SP06, SP09, BL23, BL28, BL31, BL32, BL33, BL34, CV02, CV03, CV04, CV06 (doi:10.1155/2016/9245186 ↗)
Nocturia, Benign Prostatic Hyperplasia, Urination Urgency, Urination Hesitancy, Urination Slow Stream, Urination Frequency – ST28, BL23, BL28, CV03, CV06 (doi:10.1097/MD.0000000000030925 ↗)
Radiculopathy, Lower-limb Numbness, Lower-back Pain, Radiating Lower-limb Pain, Disc-herniation Lumbar Extruded – BL23, BL24, BL25, BL26, BL27, BL28, BL29, BL30, GB30 (doi:10.3389/fneur.2024.1381292 ↗)
Groin Pain, Lower Back Pain, Sacroiliac Pain, Pubic Symphysis Pain, Difficulty Walking, Postpartum Symphysis Pubis Diastasis, Qi Stagnation Blood Stasis – BL23, BL24, BL25, BL26, BL27, BL28, BL29, BL30, BL53, BL54, GB27, GB28 (doi:10.21037/acr-2025-189 ↗)
Urinary Dysfunction, Pelvic Pain, Prostatitis Chronic – SP06, BL10, BL23, BL28, BL40, BL67, KD01, KD10, CV03, CV04 (doi:10.1186/1749-8546-2-1 ↗)
Premature Ejaculation, Sexual Dysfunction – ST36, SP12, SP13, BL23, BL27, BL28, BL29, BL30, BL31, BL32, BL33, BL34, BL47, KD01, KD03, CV04, CV06 (doi:10.4103/0973-6131.113408 ↗)
Urinary Retention Post-stroke – SP06, SP09, BL22, BL23, BL28, BL67, KD03, CV03, CV04, CV06 (doi:10.13048/jkm.16001 ↗)
Colic Renal, Lumbar Acute Pain – ST36, SP06, SP09, BL23, BL28, GB25, CV03, CV04 (doi:10.1016/j.jtcms.2025.09.006 ↗)
Urinary Retention Postoperative, Urinary Retention Post-hemorrhoidectomy – ST28, ST36, SP06, SP09, SP10, BL28, BL57, KD03, CV03, CV04, CV06, CV08 (doi:10.19917/j.cnki.1005-0779.024179 ↗)
Depression Post-stroke, Urinary Retention Post-stroke – SP06, SP09, BL28, BL39, LV03, LV05, CV03 (doi:10.27026/d.cnki.ggszc.2023.000230 ↗)
Dysuria, Urinary Frequency, Urinary Urgency, Urethral Syndrome – SP06, BL23, BL28, CV03, CV04, CV06 (doi:10.19917/j.cnki.1005-0779.024117 ↗)
Intestinal Disorders, Bowel Disease – BL25, BL28 (doi:10.13703/j.0255-2930.2016.05.028 ↗)
Enuresis Nocturnal – SP06, BL23, BL28, CV03, CV04 (doi:10.16588/j.cnki.issn2096-8426.2021.06.013 ↗)
Urinary Retention Post-stroke – ST28, SP06, SP09, BL28, BL32, BL33, BL34, CV03, CV04 (doi:10.19917/j.cnki.1005-0779.023135 ↗)
Urinary Incontinence, Stroke Sequelae Post-cerebral Infarction – SP06, BL23, BL28, PC06, CV03, CV06, GV26 (doi:10.13460/j.issn.1005-0957.2018.13.0253 ↗)
Urinary Retention – LI04, ST28, ST36, SP06, SP09, SP10, BL22, BL23, BL28, BL32, BL54, KD03, LV03, CV02, CV03, CV04, CV06, GV20 (doi:10.13288/j.11-2166/r.2013.23.017 ↗)
Spinal Cord Injury, Neurogenic Bladder, Urinary Dysfunction Retention – ST36, SP06, SP09, BL23, BL28, BL31, BL32, BL33, BL34, CV03, CV04, CV06 (doi:10.16294/j.cnki.1007-659x.2020.02.006 ↗)
Renal Colic Pain – SP06, BL23, BL28, GB25, CV03 (doi:10.27126/d.cnki.ghlzy.2024.000025 ↗)
Renal Colic Pain – ST36, SP06, SP09, BL23, BL28, BL40, GB25, CV03 (doi:10.27126/d.cnki.ghlzy.2024.000025 ↗)
Urinary Incontinence Stress – BL28, CV03, CV04, CV06 (doi:10.13703/j.0255-2930.20240331-k0002 ↗)
Stroke, Urinary Problems, Urinary Retention – SP06, BL28, BL32 (doi:10.2147/cia.s37531 ↗)
Urinary Frequency, Incontinence Bladder, Urinary Retention, Spinal Cord Injury, Bladder Dysfunction Neurogenic, Incontinence Urinary, Bladder Dysfunction, Spinal Cord Injury Incomplete – BL23, BL28, BL32, CV03, CV04, GV03, GV04 (doi:10.13703/j.0255-2930.20230831-0004 ↗)
Autonomic Dysfunction, Autonomic Problems, Multiple System Atrophy – ST25, BL23, BL25, BL28, BL32, KD06, CV03, CV04, GV04, GV20 (doi:10.13703/j.0255-2930.20241203-k0005 ↗)
Obesity Simple – BL25, BL26, BL27, BL28, BL30, KD03, KD11, KD12, KD13, KD14, KD15, TB06 (doi:10.1016/s0254-6272(08)60033-3 ↗)
Obesity – ST24, ST25, ST26, ST28, BL23, BL25, BL28, GB26, CV04, CV06, CV07, CV08, CV09, CV12, XB07 (doi:10.1016/s0254-6272(08)60033-3 ↗)
Low Back Pain, Stenosis Lumbar Spinal, Claudication Neurogenic – BL23, BL25, BL28, XB02L1, XB02L2, XB02L3, XB02L4, XB02L5 (doi:10.1016/j.imr.2026.101323 ↗)
Sciatica, Low Back Pain, Disc Herniation Lumbar – BL23, BL24, BL25, BL26, BL27, BL28, BL29, BL30, GB30 (doi:10.3389/fneur.2024.1381292 ↗)
Low Back Pain, Pelvic Girdle Pain – BL23, BL24, BL25, BL26, BL27, BL28, BL31, BL32, BL54 (doi:10.1186/s40814-016-0107-6 ↗)
Pubic Symphysis Pain, Postpartum Symphysis Pubis Diastasis – BL23, BL24, BL25, BL26, BL27, BL28, BL29, BL30, BL53, BL54, GB27, GB28 (doi:10.21037/acr-2025-189 ↗)
Back Low Pain, Claudication Neurogenic, Leg Radiating Pain, Spinal Stenosis Lumbar – BL23, BL25, BL28, XB02L1, XB02L2, XB02L3, XB02L4, XB02L5 (doi:10.1016/j.imr.2026.101323 ↗)
Infection Urinary Recurrent – ST36, SP06, BL24, BL25, BL26, BL27, BL28, BL60, KD06, KD07, KD13, KD14, KD15, GV20, CYC11, CYC13, IAC03 (doi:10.1007/s00192-024-05872-7 ↗)
Sacroiliac Pain, Postpartum Pain – BL23, BL26, BL28, BL31, BL40, GB29 (doi:10.1097/MD.0000000000036858 ↗)
Urinary Retention, Urinary Retention Postoperative – BL28, BL54, BL60, CV02, CV03 (doi:10.3831/kpi.2024.27.2.123 ↗)
Prostatitis Chronic – SP06, SP09, BL23, BL28, BL32, BL54, CV03, CV04, CV06, GV04 (doi:10.13703/j.0255-2930.2017.08.011 ↗)
Prostatitis Chronic, Pelvic Pain – BL06, BL07, BL28, BL32, CV03, CV04, GV20, GV21, GV22, GV24 (doi:10.13703/j.0255-2930.2016.12.006 ↗)
Urinary Retention Postoperative – ST28, SP06, SP09, BL28, CV03, CV04, CV06 (doi:10.13703/j.0255-2930.2019.07.008 ↗)
Urinary Retention Post-hemorrhoidectomy – SP06, BL28, CV03, CV04 (doi:10.13703/j.0255-2930.2019.08.006 ↗)
Cystitis – ST28, SP06, SP09, BL23, BL28, LV05, LV08, CV03 (Deadman, Al-Khafaji & Baker, A Manual of Acupuncture – point group actions)
Heat Bladder, Damp Bladder, Heat Bladder, Damp Bladder – ST28, SP11, SP12, HT08, BL22, BL27, BL28, BL31, BL35, BL36, BL39, KD10 (Yang Yong-Xuan, clinical point-selection notes)
Damp Large Intestine, Heat Large Intestine, Damp Large Intestine, Heat Large Intestine – LI01, LI03, LI09, LI11, ST22, ST25, SP04, SP15, SP16, BL25, BL27, BL28, BL37, BL39 (Yang Yong-Xuan, clinical point-selection notes)
Lumbar Disc Herniation – ST36, BL24, BL25, BL26, BL28, BL57, GB30, GB34 (Clinical Research on the Efficacy of Thread-embedding Acupuncture on Herniated Intervertebral Disc of Lumbar Spine. ClinicalTrials.gov NCT03236753)
Urinary Retention Postoperative – SP06, BL28, CV03 (陈燕萍郑培秋何艳英颜少芳邓桂花. 穴位脉冲电刺激预防腹部术后尿潴留的效果观察. 现代中西医结合杂志 ., 2009 [CNKI])
Leg Pain, Shoulder Pain, Neck Pain, Lumbar Pain, Yang Type Pain – SI06, BL23, BL28, BL40, BL43, BL60, PC07, GV09, GV14, GV20 (曹文忠. 提高针灸治痛疗效创新理论的探讨. 江西中医药 ., 2011 [CNKI])
Urinary Retention, Urinary Retention Post-stroke – SP06, BL28, BL32 (Yu KW et al.. Effects of electroacupuncture on recent stroke inpatients with incomplete bladder emptying: a preliminary study. Clinical Interventions in Aging, 2012)
Kidney Qi Deficiency, Nocturnal Emission Wet Dream, Incontinence Bladder, Kidney Qi Deficiency, Nocturnal Emission Wet Dream, Incontinence Bladder – SP06, BL23, BL28, LV01, CV03 (sacredlotus.com ↗)

Most often selected alongside BL28

How many sourced protocols in the index pair each point with BL28. Corpus frequency, not a combination to use.

CV03Central Pivot38 protocols
BL23Kidney Shu Point35 protocols
SP06Three Yin Intersection32 protocols
CV04Original Qi Gate22 protocols
SP09Yin Mound Spring19 protocols
CV06Sea Of Qi17 protocols
BL32Second Bone Hole16 protocols
BL25Large Intestine Shu Point14 protocols
ST36Leg Three Miles11 protocols
BL27Small Intestine Shu Point10 protocols
BL26Original Qi Gate Shu Point9 protocols
GV20100 Convergences8 protocols