BL-57 Chengshan
BL-57 Chengshan (承山) is a point on the Bladder meridian. In TCM theory it is described as influencing the channel's qi, and it is traditionally used in the context of the whole pattern rather than as a stand-alone remedy. This page explains how to locate it, what the tradition says about it, and how to press it safely.
Location
In the depression at the lower end of the gastrocnemius muscle, when the heel is lifted.
How to find it
Stand on tiptoe. The point is in the V-shaped hollow at the bottom of the calf muscle.
Traditional functions
- Relaxes the sinews and benefits the leg
- Benefits the low back
- Traditionally associated with hemorrhoids
Traditional uses
- Calf cramps and tightness
- Leg fatigue
- Low-back tension
- Hemorrhoid discomfort in the classical description
How to press it
Press with the thumb for 1 minute while the calf is relaxed, or gently stretch the calf afterward.
Acupressure is generally a gentle practice. Use the pad of the thumb or finger, start with light pressure, and increase only to a comfortable level. A mild ache or warmth is common; sharp pain is a signal to ease off.
Safety
Do not massage a calf that is swollen, hot, or painful — this can be a sign of a blood clot and needs urgent medical assessment.
How this is viewed today
BL-57 is used in trials for calf cramps and low-back pain, usually in combination with other points. Evidence is limited.
Sources & further reading
- Huangdi Neijing (黃帝內經), c. 2nd century BCE.
- Nanjing (難經), c. 1st–2nd century CE.
- World Health Organization, Standard Acupuncture Nomenclature, 2nd ed., 1991.
- Deadman P, Al-Khafaji M, Baker K. A Manual of Acupuncture. Journal of Chinese Medicine Publications.
- National Center for Complementary and Integrative Health, Acupuncture: What You Need To Know.
Related: Bladder meridian · Acupoint library · BL-40 Weizhong · BL-23 Shenshu · SI-11 Tianzong · all twelve meridians