BL 21 (Chinese name: weishu )

Nov 5, 2021 | Acu point

How to find

In a seated position with the arms hanging down, the spinous process of T7 is approximately on the level of the inferior angle of the scapula. From there, count down five spinous processes to the spinous process of T12. BL-21 is located on the level of the lower border of its spinous process and 1.5 cun lateral to the midline at the highest point of the paraspinal musculature. Or: Palpate for the articulation of the most inferior rib with T12 and locate BL-21 1.5 cun lateral to the lower border of its spinous process. Or: Use the lumbar spine for reference. Located on the same level are a point of Ex-B-2 (0.5 cun lateral to the midline) and BL 50 (Stomach Granary) (3 cun lateral to the midline).


1.5 cun lateral to the posterior midline, on the level of the lower border of the spinous process of the 12th thoracic vertebra (T12).


  • Regulates the Stomach, descends counterflow Qi, harmonises the Middle Heater, eliminates Dampness and food stagnation
  • Opens the channel


Back-shu point of the Stomach, main point for regulating any dysfunction of the Stomach.

Discover more

This is a part of the article you can find in Knowlative WebApp. To see the full content of the article click the link below and enter the app.
Not subscribed yet? Discover more on our WebApp.