经云∶上焦如雾，中焦如沤，下焦如渎。又云∶三焦者，决渎之官，水道出焉。又云∶
是经少血多气。
《中藏经》云∶三焦者，人之三元之气也，号曰中清之府。总领五脏六腑，营卫经络，内
外、左右、上下之气也。三焦通则内外、左右、上下皆通也。其于周身灌体，和内调外，
荣左养右，导上宣下，莫大于此也。
\r手少阳三焦腑图\p06-d43a74.bmp\r
三焦手少阳之脉，起于小指次指之端，上出次指之间，循手表腕，出臂外两骨之间，上
贯肘，循 外，上肩而交出足少阳之后，入缺盆，布膻中，散络心包，下膈循属三焦。其
支者，从膻中上出缺盆，上项侠耳后，直上出耳上角，以屈下颊，至 ；其支者，从耳后
入耳中，出走耳前，过客主人前交颊，至目锐 。
\r三焦经循行图\p06-d43a75.bmp\r
手经少阳三焦脉，起自小指次指端，两指岐骨手腕表，上出臂外两骨间，肘后 外
循肩上，少阳之后交别传，下入缺盆膻中分，散络心包膈里穿。支者膻中缺盆上，上项耳
后耳角旋，屈下至出 仍注颊；一支出耳入耳前，却从上关交曲颊，至目锐 乃尽焉。
【注】手少阳三焦之脉，起于手小指次指外侧之端关冲穴，从关冲上出两指之间液门、
中渚穴，循手腕表阳池穴也。从阳池出臂外两骨之间，外关、支沟、会宗、三阳络、四
渎、天井等穴，上贯肘，清冷渊穴也，从清冷渊穴循臂 外，上肩循消泺、 会、肩 、
天穴，从天 穴而交出足少阳经之后，入缺盆，布膻中，散络心包，下膈内而循行之
分，皆属三焦经也。其支者，从膻中上外出
缺盆，上项天牖穴，从天牖穴循系耳后翳风、 脉、颅息穴，从颅息直上出耳上角角孙穴、
丝竹空穴也。由角孙、丝竹空穴绕耳以屈下至 和 、耳门穴也。其本支之别，支者从耳
后出走耳前，过足少阳经客主人穴之前，交颊至目锐之外 ，以交于足少阳胆经也。
《黄帝内经》中说：上焦的功能像雾露弥漫，中焦的功能像沤渍发酵，下焦的功能像沟渠排水。又说：三焦是主持水道通畅的官职，水液由此排出。又说：这条经脉（手少阳三焦经）血少气多。
《中藏经》说：三焦，是人体三元之气的总称，被称为“中清之府”。它统领五脏六腑、营卫经络以及体内体外、左右上下之气。三焦通畅，则体内体外、左右上下之气皆通畅。它在周身灌注形体，调和内外，滋养左侧养护右侧，引导上部宣通下部，没有比这更重要的了。
手少阳三焦经的脉气，起始于小指和次指（无名指与中指）的末端，向上出于两指之间，沿着手背腕部，出于前臂外侧尺骨与桡骨之间，向上贯穿肘部，沿着臂外侧，上行至肩部并交出足少阳胆经之后，进入缺盆，分布于膻中，散行联络心包，向下穿过横膈，依次属于上、中、下三焦。其支脉，从膻中上行出于缺盆，上项部挟耳后，直上出于耳上角，然后弯曲下行至面颊，到达眼眶下部；另一支脉，从耳后进入耳中，走出耳前，经过客主人穴前方交叉于面颊，到达目外眦。
手少阳三焦经循行歌诀：起自小指次指端，两指岐骨手腕表，上出臂外两骨间，肘后臑会外循肩上，少阳之后交别传，下入缺盆膻中分，散络心包膈里穿。支者膻中缺盆上，上项耳后耳角旋，屈下至出颔仍注颊；一支出耳入耳前，却从上关交曲颊，至目锐眦乃尽焉。
【注释】手少阳三焦经的脉气，起始于手小指和次指外侧末端的关冲穴，从关冲穴向上出于两指之间的液门穴、中渚穴，沿着手背腕部的阳池穴。从阳池穴出于前臂外侧两骨之间，经过外关、支沟、会宗、三阳络、四渎、天井等穴，向上贯穿肘部，经过清冷渊穴，从清冷渊穴沿着臂外侧，上行至肩部经过消泺、臑会、肩髎、天髎穴，从天髎穴而交出足少阳胆经之后，进入缺盆，布散于膻中，散行联络心包，向下穿过横膈向内循行，分别属于三焦经。其支脉，从膻中向上外出缺盆，上项部经过天牖穴，从天牖穴沿着耳后经过翳风、瘛脉、颅息穴，从颅息穴直上出于耳上角的角孙穴、丝竹空穴。由角孙、丝竹空穴绕耳弯曲下行至颔部和耳门穴。其本支的另一分支，从耳后出走耳前，经过足少阳胆经客主人穴的前方，交叉于面颊，到达目外眦，以交于足少阳胆经。
The *Classic of Difficult Issues* (Nan Jing) states: The Upper Jiao is like mist and dew; the Middle Jiao is like fermentation and soaking; the Lower Jiao is like a drainage ditch. It also states: The Sanjiao (Triple Burner) is the official responsible for waterways, through which fluids are discharged. Furthermore, it states: This meridian (Hand-Shaoyang Sanjiao Meridian) has little blood but abundant Qi.
The *Zhongzang Jing* (Classic of the Inner Viscera) states: The Sanjiao is the collective term for the Three Yuan Qi of the human body, known as the "Middle Clear Mansion." It commands the Five Zang and Six Fu organs, Ying and Wei (Nutritive and Defensive) Qi, meridians, and the Qi within and without, left and right, above and below. When the Sanjiao is unobstructed, the Qi within and without, left and right, above and below, all flow freely. In irrigating the entire body, harmonizing the interior and exterior, nourishing the left and supporting the right, guiding the upper and venting the lower, nothing surpasses its importance.
The Hand-Shaoyang Sanjiao Meridian originates at the lateral tip of the ring finger and middle finger, ascends between these two fingers, follows the dorsum of the hand and wrist, emerges between the radius and ulna in the forearm, ascends through the elbow, follows the lateral aspect of the arm, reaches the shoulder, crosses posterior to the Foot-Shaoyang Gallbladder Meridian, enters the supraclavicular fossa (Quepen), spreads in the chest center (Shanzhong), disperses and connects with the Pericardium, descends through the diaphragm, and successively belongs to the Upper, Middle, and Lower Sanjiao. Its branch arises from the Shanzhong, ascends out of the Quepen, goes up the neck, runs behind the ear, ascends directly to the upper corner of the ear, then curves down to the cheek, reaching the infraorbital region; another branch enters the ear from behind it, exits anterior to the ear, passes anterior to the Keyrenzhuren point, crosses the cheek, and terminates at the outer canthus of the eye.
Song of the Hand-Shaoyang Sanjiao Meridian Course: Originating at the tip of the ring and middle fingers, between the metacarpal bones at the wrist dorsum; ascending between the radius and ulna in the forearm, passing the elbow and following the lateral shoulder; crossing posterior to Shaoyang to transmit elsewhere; descending into the supraclavicular fossa and Shanzhong, dispersing to connect with the Pericardium and piercing through the diaphragm. A branch rises from Shanzhong to the supraclavicular fossa, ascends the neck behind the ear, rotates around the ear corner, curves down to the jaw and cheek; another branch exits the ear to the front, crosses the cheek at Shangguan, and ends at the outer canthus.
[Annotation] The Hand-Shaoyang Sanjiao Meridian originates at Guanchong (LI1), located at the lateral tip of the ring finger and middle finger. From Guanchong, it ascends between the fingers to Yemen (SJ2) and Zhongzhu (SJ3), and follows the wrist dorsum to Yangchi (SJ4). Emerging from Yangchi between the radius and ulna, it passes through Waiguan (SJ5), Zhigou (SJ6), Huizong (SJ7), Sanyangluo (SJ8), Sidu (SJ9), Tianjing (SJ10), ascends through the elbow to Qinglengyuan (SI11), follows the lateral arm to Xiaoluo (SJ13), Naohui (SJ14), Jianliao (TE14), and Tianliao (TE15). From Tianliao, it crosses posterior to the Foot-Shaoyang Gallbladder Meridian, enters the supraclavicular fossa, spreads in the Shanzhong, connects with the Pericardium, descends through the diaphragm, and distributes within the Sanjiao. Its branch rises from Shanzhong to the supraclavicular fossa, ascends the neck to Tianyou (TE16), follows the ear posteriorly through Yifeng (TE17), Chimai (TE18), and Luxi (TE19), ascends directly to the upper ear corner to Jiaosun (TE14) and Sizhukong (TE23). From Jiaosun and Sizhukong, it winds around the ear, curving down to the mandible and Ermen (TE21). Another branch emerges from behind the ear to the front, passes anterior to the Foot-Shaoyang Keyrenzhuren point (GB4), crosses the cheek, and reaches the outer canthus, connecting with the Foot-Shaoyang Gallbladder Meridian.