title: [On the needling depth of filiform needle at acupoints].
abstract: OBJECTIVE
  To promote the study on standardization of needling depth of acupoints, ensure safety of needling, and promote internationally academic exchanges of acupuncture and moxibustion.
  
  
  METHODS
  Study, analyze ancient and present literature of acupuncture and moxibustion, and compare the differences in needling depth, measure unit, description methods, and the causes and trend, and indicate confusion at present, and put forward a proposition for establishing standardization of needling depth.
  
  
  CONCLUSIONS
  There are a lot of confusions in needling depth of acupoints from the ancient times to the present, which produces severe unfavorable influence on standardization and international exchanges of acupuncture and moxibustion science, and it remains to be studied for the standardization as early as possibly.
authors.affiliation: Shandong Province Qingdao Sanitarium, Shandong 266071, China. WQF368@sina.com.cn
authors.forename: Yong-xian
authors.initials: YX
authors.lastname: Sun
authors.forename: Qi-fang
authors.initials: QF
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
mesh_terms: D026881:Acupuncture; D015669:Acupuncture Points; D015670:Acupuncture Therapy; D006801:Humans; D009071:Moxibustion; D009339:Needles