BL24 Qihaishu (Sea Of Qi Shu Point)

Location

1.5 thumb widths lateral to the du mai at the level of the lower border of the spinous process of the 3rd lumbar vertebra.

Cautions

Avoid deep perpendicular needling.

Indications

Conditions for which BL24 is listed as indicated. An indication list is a reference index, not a prescription – see the protocols below for sourced treatments.

DiarrheaDiarrhoea BloodMenstrual Cramps HemorrhoidsHaemorrhoids BleedingVaginal DischargeMyalgia Back Long ExtensorsAbdominal Pain Lower Back Pain Irregular Periods Period / Menstruation IrregularBack Lumbar WeaknessLeg Weakness

TCM actions

What classical sources say BL24 does in the terms of Chinese medicine theory. These describe the point, not a condition.

Benefit Regulate Jiao LowerRegulate Jiao Lower

Protocols using BL24

The 50 best-sourced of 91, ranked by strength of evidence. The count above is the full figure.

Back Pain, Sciatica Pain, Herniated Nucleus Pulposus – BL23, BL24, BL25, BL26, BL31, BL32, BL33, BL34, BL40, BL57, BL60, GB30 (doi:10.1093/ecam/nep085 ↗)
Lumbar Pain, Low-back Pain – BL23, BL24, BL25, BL26, BL32, BL40, BL60, GB30, GB34 (doi:10.1155/2013/872142 ↗)
Sexual Dysfunction, Feet Numbness, Erectile Dysfunction, Low Sexual Desire, Back Lower Pain, Legs Numbness – BL23, BL24, CV01, CV04 (doi:10.3831/KPI.2014.17.029 ↗)
Lower Back Pain – BL23, BL24, BL25, BL40, GB30, GV03, GV04, GV05 (doi:10.1155/2015/808425 ↗)
Low Back Chronic Pain – BL23, BL24, BL25, BL26, BL40, BL60, GV03 (doi:10.1097/MD.0000000000010790 ↗)
Low Back Pain, Disability Lumbar, Sprain Lumbar, Sprain Lumbar Acute – ST25, BL23, BL24, BL25 (doi:10.3831/KPI.2018.21.015 ↗)
Radicular Pain, Low-back Pain, Lumbar Disc Herniation, Paresthesia Lower-limb, Disc-herniation Lumbar – BL23, BL24, BL25, BL26, BL40, BL60, GB03, GV03 (doi:10.1155/2018/5871657 ↗)
Chronic Pain, Back Low Pain, Disability Lumbar – BL23, BL24, BL25, BL26, BL40, BL60, GB30, GB31, GV03 (doi:10.1186/s13063-018-3049-x ↗)
Low Back Pain, Paresthesia Lower Extremity, Disc Herniation Lumbar, Radiating Lower Extremity Pain, Lower Extremity Weakness – BL23, BL24, BL25, BL26, BL40, BL60, GB03, GV03 (doi:10.2147/JPR.S234761 ↗)
Back Low Chronic Pain – BL23, BL24, BL25, BL26, BL40, BL60, GV03 (doi:10.1097/MD.0000000000022526 ↗)
Disability Low Back, Low Back Chronic Pain, Low Back Non-specific Pain – BL23, BL24, BL25, GB30 (doi:10.1371/journal.pone.0269282 ↗)
Tremor, Parkinson's Disease, Low Back Pain, Bradykinesia, Postural Deformity Pisa Syndrome, Scoliosis Lateral Trunk Flexion, Muscle Rigidity Paraspinal – BL22, BL23, BL24, BL25 (doi:10.12998/wjcc.v10.i30.11023 ↗)
Leg Weakness, Low-back Pain, Claudication Neurogenic, Lower-extremity Pain, Stenosis Lumbar-spinal – BL23, BL24, BL25, BL26, BL40, BL60, GB30, GB31, GV03 (doi:10.2147/JPR.S399132 ↗)
Leg Weakness, Low-back Pain, Claudication Neurogenic, Lower-extremity Pain, Stenosis Lumbar-spinal – BL23, BL24, BL25, BL26, BL40, BL60, GB30, GB31, GV03 (doi:10.2147/JPR.S399132 ↗)
Leg Numbness, Lumbar Pain, Back Low Pain, Lower-limb Pain, Lower-limb Numbness, Disc-herniation Lumbar, Herniation Disc Lumbar – SP06, BL22, BL23, BL24, BL25, BL26, BL40, KD03, GB30 (doi:10.12998/wjcc.v11.i10.2308 ↗)
Low-back Pain, Lower-leg Radiating Pain, Buttock Referred Pain, Claudication Neurogenic Intermittent, Stenosis Lumbar Degenerative – BL23, BL24, BL25, BL40, BL60, GB30 (doi:10.3390/medicina59122166 ↗)
Sciatica, Lumbar Pain, Low Back Pain, Lumbar Disc Herniation, Disc-herniation Lumbar, Lower-extremity Right Pain, Leg Right Numbness, Scoliosis Lumbar – BL23, BL24, BL25, BL26, BL36, BL37, BL40, BL57, BL60, GB30 (doi:10.1097/MD.0000000000036684 ↗)
Low Back Chronic Pain, Back Low Chronic Pain – BL23, BL24, BL25 (doi:10.1016/j.jams.2019.04.005 ↗)
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 ↗)
Knee Pain, Swollen Knee, Stiffness Knee, Knee Post-surgical Problems – ST34, ST35, ST36, SP09, SP10, BL24, BL25, BL40, GB34, LV08, LV09 (doi:10.2147/JPR.S453133 ↗)
Low-back Pain, Chronic Pain – BL23, BL24, BL25 (doi:10.1186/s12906-025-04891-1 ↗)
Urinary Incontinence Stress, Pelvic Floor Dysfunction – ST36, SP06, BL23, BL24, BL31, BL32, BL33, BL34, BL35, CV03, CV04 (doi:10.11817/j.issn.1672-7347.2025.240242 ↗)
Neuropathic Pain, Sensory Disturbance, Claudication Neurogenic, Lumbar Spinal Stenosis Pain, Radiating Lower Leg Pain, Low Back Pain, Motor Weakness – BL23, BL24, BL25, BL40, BL60, GB30 (doi:10.3390/medicina62010225 ↗)
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 ↗)
Sciatica, Lumbago, Leg Pain, Lower Back Pain – BL22, BL23, BL24, BL25, BL52, GV03, GV04, GV05 (doi:10.3831/KPI.2012.15.006 ↗)
Contracture Knee, Brachial Plexus Injury, Muscle Atrophy, Paralysis Upper Extremity, Paralysis Lower Extremity, Contracture Ankle, Contracture Shoulder, Contracture Elbow, Scoliosis, Neuromotor Impairment, Steppage Gait – LU01, LI04, LI05, LI11, LI14, ST34, ST36, ST41, SP09, SP10, SI05, SI06, SI07, SI09, BL11, BL12, BL22, BL23, BL24, BL25, BL26, BL36, BL37, BL39, BL55, BL56, BL57, BL58, BL60, BL61, BL62, KD03, KD04, KD05, KD06, TB09, GB20, GB21, GB40 (doi:10.3831/KPI.2013.16.009 ↗)
Low Back Pain, Leg Radiating Pain, Failed Back Surgery Syndrome – BL23, BL24, BL25 (doi:10.1371/journal.pone.0170972 ↗)
Blood Stasis, Psoriasis Plaque – ST36, SP10, BL24 (doi:10.1186/s13063-019-3736-2 ↗)
Fatigue, Respiratory Dysfunction, Post-covid Rehabilitation – ST36, BL24, BL26, CV12, GV14 (doi:10.1016/j.imr.2020.100479 ↗)
Leg Pain, Buttock Pain, Low Back Pain, Mobility Reduced, Spinal Stenosis Lumbar, Neurogenic Claudication – ST36, ST40, BL22, BL23, BL24, BL25, BL26, BL53, BL54, GB30, GB31, GB34, LV03, GV03, GV04, GV05 (doi:10.1016/j.imr.2025.101204 ↗)
Leg Pain, Leg Numbness, Leg Weakness, Radiculopathy Lumbar, Lower-back Pain – BL22, BL23, BL24, BL25, BL26, BL27, BL31, BL32, BL33, BL34, BL54, GB30, GV03, GV04 (doi:10.3831/KPI.2025.28.4.269 ↗)
Lumbar Pain, Low Back Pain – BL22, BL23, BL24, BL25, BL26 (doi:10.15294/kemas.v16i2.22650 ↗)
Lumbar Pain, Stenosis Lumbar Spinal, Claudication Neurogenic, Lower Extremity Pain – SP06, BL23, BL24, BL25, BL26, BL27, BL36, BL40, BL57, BL60, GB30, GB31, GB34, GV03, GV04 (doi:10.13517/j.cnki.ccm.2025.05.015 ↗)
Back Pain, Lumbar Pain, Back Low Pain – BL23, BL24, BL25, GB30 (doi:10.3389/fmed.2023.1021255 ↗)
Back Pain, Lumbar Stiffness, Lumbar Pain, Back Acute Pain, Low Back Acute Pain – SP06, BL23, BL24, BL25, BL26, BL40, GV03, GV04 (doi:10.3390/healthcare11222939 ↗)
Back Pain, Lumbar Lower Back Pain, Lumbar Pain, Back Low Pain – BL23, BL24, BL25, GB30 (doi:10.3389/fmed.2025.1659696 ↗)
Pelvic Pain, Pubic Pain, Diastasis Symphysis-pubis – BL23, BL24, BL25, BL26, GB27, GB28 (doi:10.21037/acr-2025-189 ↗)
Low Back Pain, Stenosis Lumbar Spinal, Claudication Neurogenic, Leg Radiating Pain – BL23, BL24, BL25, BL40, BL60, GB30 (doi:10.3390/medicina62010225 ↗)
Knee Pain, Osteoarthritis Knee, Stiffness Knee, Postoperative Pain – ST31, ST32, ST34, ST35, ST36, SP09, SP10, BL24, BL25, BL40, GB29, GB30, GB34, LV08, LV09, XL02, XL05A (doi:10.2147/JPR.S453133 ↗)
Knee Chondromalacia Patellae Pain – BL23, BL24 (doi:10.1016/s0254-6272(17)30005-5 ↗)
Sciatica, Back Low Pain, Leg Radiating Pain, Low Back Acute Pain – BL23, BL24, BL25 (doi:10.2147/JPR.S597299 ↗)
Parkinson's Disease, Postural Deformity Pisa Syndrome, Pisa Syndrome – BL22, BL23, BL24, BL25 (doi:10.12998/wjcc.v10.i30.11023 ↗)
Low-back Pain, Radiculopathy Lumbar – BL24, BL25, BL31, GB30 (doi:10.1097/md.0000000000039720 ↗)
Back Low Pain, Disability Functional, Low Back Pain – ST36, HT03, BL23, BL24, BL25, BL30, BL40, BL58, GV04 (doi:10.51507/j.jams.2021.14.6.219 ↗)
Low Back Chronic Pain – BL23, BL24, BL25, BL26, BL40, BL60, GV03, XB05 (doi:10.1097/MD.0000000000022526 ↗)
Parkinson's Disease – LI10, BL24, BL58, TB04, GB33 (doi:10.1002/mds.70343 ↗)
Low Back Pain, Stenosis Lumbar Spinal – BL23, BL24, BL25, BL26, BL40, BL60, GB30, GB31, GV03 (doi:10.2147/JPR.S399132 ↗)
Low Back Pain, Low Back Acute Pain – SP06, BL23, BL24, BL25, BL26, BL40, XB02L3, XB02L4, XB02L5 (doi:10.3390/healthcare11222939 ↗)
Low Back Pain, Low Back Acute Pain – SP06, BL23, BL24, BL25, BL26, BL40, GV03, GV04, XB02L3, XB02L4, XB02L5 (doi:10.3390/healthcare11222939 ↗)
Sciatica, Low Back Pain, Spinal Stenosis Lumbar Degenerative, Claudication Neurogenic, Spinal Stenosis Lumbar – BL23, BL24, BL25, BL40, BL60, GB30, GB31 (doi:10.3390/medicina59122166 ↗)

Most often selected alongside BL24

How many sourced protocols in the index pair each point with BL24. Corpus frequency, not a combination to use.

BL23Kidney Shu Point78 protocols
BL25Large Intestine Shu Point72 protocols
BL26Original Qi Gate Shu Point43 protocols
BL40Middle Of The Crease42 protocols
GB30Jumping Circle41 protocols
GV03Yang Lumbar Gate30 protocols
BL60Kunlun (Mountains)27 protocols
GV04Life Gate17 protocols
BL22Sanjiao Shu Point15 protocols
ST36Leg Three Miles15 protocols
GB34Yang Mound Spring11 protocols
GV05Suspended Pivot11 protocols