Bladder Meridian

Zhongliao BL33: Nomenclature, Location, Functions, Indications

Zhongliao is at the third posterior sacral foramen approximately at the middle part.


Zhong: middle Liao: foramen
Zhongliao is at the third posterior sacral foramen approximately at the middle part.
Point: BL33
Chinese Name: 中髎
Name: Zhongliao
English Name/Meaning: Middle Crevice
Pinyin: zhōng liáo
Han Geul 한글: jung nyo 중료
Romaji: chū ryō?
Vietnamese:Trung liêu


On the sacrum, medial and inferior to ciliao (Bl 32), just at the third posterior sacral foramen.

Functions of Zhongliao :

  • Regulates lower burner.
  • Benefits urination and defaecation.
  • Strengthens the lower back and legs.


  • Genital problems, regulates hormones,eneuresis, infertility, uterine prolapse, leucorrhoea, orchitis.
  • Low back pain, sacroiliac joint pain, sciatica, numbness in lumbar and sacral region.


Perpendicular insertion 0.5 to 1 cun.


One of the point of baliao.


No needling during pregnancy.


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.