Bladder Meridian

Weizhong BL40 :Nomenclature, Location, Function, Indication, Method

Weizhong is at the midpoint of the transverse crease of the popliteal fossa.


Wei: crooked Zhong: middle
Weizhong is at the midpoint of the transverse crease of the popliteal fossa.

Point: BL40
Chinese Name: 委中
English Name/Meaning: Middle of the Crook
Pinyin: wěi zhōng
Han Geul 한글: wi jung 위중
Romaji: i chū
Vietnamese:Ủy trung


On the midpoint of the transverse crease of the popliteal fossa, between the tendons of the biceps femoris and semitendinous.

Functions of Weizhong:

  • Drains summer heat (heat in blood, heat in body).
  • Benefits lower back and knees (god for tendons).
  • Clears blood heat (get toxinsout of blood, red rashes).


  • Main point for pains of the back and lumbar, spasm of the popliteal tendons, weakness or paralysis in the lower limbs.
  • Since weizhong is the He-sea point of Bladder meridian, this is also main point in difficulty in urination, enuresis.
  • Diseases of skin: Erysipelas, urticaria, furuncles.


Puncture perpendicularly 1-1.5 cun.
Prick to bleeding with three-edged needles.


He-Sea Point of Bladder.
Gao Wu command point.


Not suitable for direct moxibustion.


Dr. Ishwar Gyawali is Consultant Acupuncturist and Ayurveda Physician from Kathmandu, Nepal. He had completed BAMS (Bachelor of Ayurveda Medicine and Surgery), a five and half year course on Ayurveda Medicine from Kirtipur Campus affiliated to Tribhuvan University ,Institute Of Medicine, Nepal under scholarship in 2011. He had completed his MD in TCM from Nanjing University Of Chinese Medicine in 2016 under scholarship of Ministry of Education, Nepal. With an experience of Serving for Government of Nepal for 2 years and private practise for more than 5 years, he has sound knowledge in Ayurveda as well as Chinese Medicine. He is a registered Doctor in NAMC (Nepal Ayurveda Medical Council ) both as a physician as well as TCM/Acupuncture Specialist.

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