手太阳小肠之脉起于小指之端。循手外侧上腕出踝中。直上循臂骨下廉出肘内侧。两骨之间。上循 外后廉。
出肩解绕肩胛交肩上入缺盆。络心。循咽下膈抵胃。属小肠。其支者。从缺盆循颈上颊至目锐 。却入耳中。其支
者。别颊上 抵鼻至内 。斜络于颧。凡十有九穴。今取三穴。
少泽（一名小吉） 在手小指外侧端。去爪甲角一分陷中。甲乙经曰。在小指之端去爪甲一分陷中。手太阳所
出为井。刺一分。留二呼。灸一壮。主治 疟寒热汗不出喉痹舌强。心烦咳嗽。颈项痛不可顾目生翳。乾坤生意云。
此为十井穴。凡国中风痰涎壅盛。咽喉闭塞。急以三棱针刺少商商阳中冲少冲及此穴。使血气流通。乃起死回生急
救之妙穴。
后溪 在手小指本节后外侧横纹尖上陷中。仰手握拳取之。一云在手腕前外侧拳尖起骨下陷中。手太阳所注为
。刺一分。留二呼。灸一壮。主治 疟寒热目翳鼻衄耳聋胸满。项强等症。捷法云。疗头项强痛。腮颊红肿。咽
喉塞闭。水饮不下。心肺二经热病。双蛾喉痛。肺与三焦热病。单蛾咽肿。上下牙两颊疼痛。牙关紧急不开。颈项
红肿。肾虚头痛。肝厥头晕。并醉后头风。
少海 在肘内大骨外去肘端五分陷中。屈手向头取之。手太阳所入为合。刺二分。留七呼。灸五壮。主治肘臂
肩颈项痛。咽喉牙龈疼痛。
手太阳小肠经的经脉起始于小指的末端。沿着手的尺侧上行至腕部，出于尺骨茎突（踝）之中。直行向上，沿前臂尺骨下缘，出于肘内侧两骨之间。再向上沿上臂外侧后缘。
出于肩关节（肩解），绕行肩胛部，交会于肩上，进入缺盆（锁骨上窝）。联络心脏。沿咽部下行穿过膈肌，到达胃部。归属于小肠。它的支脉，从缺盆沿颈部上行至面颊，到达目外眦（锐眦），然后进入耳中。另一支脉，从面颊分出，上行至颧骨部位抵于鼻旁，斜行络于颧骨。共有十九个穴位，这里选取三个穴位进行介绍。
少泽穴（又名小吉穴）：位于手小指外侧端，距离指甲角一分处的凹陷中。《甲乙经》记载：“在小指之端，距离指甲角一分处的凹陷中。”这是手太阳小肠经所出的“井”穴。针刺深度一分，留针二呼的时间，艾灸一壮。主治疟疾寒热、汗不出、喉痹、舌强、心烦、咳嗽、颈项痛不可回顾、目生翳膜等症。《乾坤生意》云：此穴属于十井穴之一。凡是中风导致痰涎壅盛、咽喉闭塞者，紧急时用三棱针刺少商、商阳、中冲、少冲及本穴，使气血流通，是起死回生的急救妙穴。
后溪穴：位于手小指本节（掌指关节）后方外侧横纹尖端处的凹陷中。仰手握拳时取穴。另一种说法是在手腕前外侧，拳尖突起骨头下方的凹陷中。这是手太阳小肠经所注的“输”穴。针刺深度一分，留针二呼的时间，艾灸一壮。主治疟疾寒热、目翳、鼻衄、耳聋、胸满、项强等症状。《捷法》云：治疗头项强痛、腮颊红肿、咽喉闭塞、水饮不下、心肺二经热病、双蛾喉痛（扁桃体化脓）、肺与三焦热病、单蛾咽肿、上下牙及两颊疼痛、牙关紧急不开、颈项红肿、肾虚头痛、肝厥头晕，以及醉酒后引起的头风。
少海穴：位于肘内侧大骨（肱骨内上髁）外侧，距离肘端五分处的凹陷中。屈手向头部方向取穴。这是手太阳小肠经所入的“合”穴。针刺深度二分，留针七呼的时间，艾灸五壮。主治肘臂、肩、颈项痛，咽喉牙龈疼痛。
The meridian of the Hand-Taiyang Small Intestine originates at the ulnar end of the little finger. It follows the ulnar side of the hand, ascends to the wrist, and emerges from the styloid process of the ulna (Huai). It goes straight up along the lower border of the ulna, emerging between the two bones on the medial side of the elbow. It then ascends along the posterior lateral border of the upper arm.
It emerges from the shoulder joint (Jianjie), circles around the scapula, intersects at the shoulders, enters the Supraclavacular Fossa (Quepen), connects with the Heart, follows the pharynx, descends through the diaphragm, reaches the Stomach, and belongs to the Small Intestine. Its branch arises from the Supraclavacular Fossa, follows the neck, ascends to the cheek, reaches the outer canthus (Ruizi), and then enters the ear. Another branch diverges from the cheek, ascends to the zygomatic region, reaches the nose, and obliquely connects with the zygomatic bone. There are nineteen acupoints in total; here, three points are selected for introduction.
Shaoze (SI1) (also known as Xiaoji): Located at the ulnar end of the little finger, in the depression one fen away from the corner of the nail. The *Jia Yi Jing* states: "At the end of the little finger, one fen away from the corner of the nail." This is the Jing-Well point where the Hand-Taiyang Small Intestine meridian issues. Needle depth: one fen; retain needle for two breaths; moxibustion: one cone. Indications include malaria with chills and fever, anhidrosis, throat obstruction (Houbi), tongue stiffness, restlessness, cough, pain in the neck and nape making turning difficult, and visual opacities. According to *Qiankun Shengyi*, this point belongs to the Ten Jing-Well points. In cases of stroke with excessive phlegm-saliva accumulation and throat blockage, urgently prick Shaoshang, Shangyang, Zhongchong, Shaochong, and this point with a triangular needle to promote the flow of Qi and Blood; it is a miraculous emergency point for reviving the dying.
Houxi (SI3): Located in the depression at the tip of the transverse crease on the lateral side of the metacarpophalangeal joint of the little finger when the hand is supinated and clenched into a fist. Another description places it in the depression below the prominent bone at the anterior-lateral aspect of the wrist, starting from the knuckle. This is the Shu-Stream point where the Hand-Taiyang Small Intestine meridian pours. Needle depth: one fen; retain needle for two breaths; moxibustion: one cone. Indications include malaria with chills and fever, visual opacities, epistaxis, deafness, chest fullness, and stiff neck. According to *Jie Fa*, it treats stiff neck and pain, swelling and redness of the cheeks and parotid region, throat blockage, inability to swallow water or fluids, heat diseases of the Heart and Pericardium meridians, bilateral tonsillitis (Double Erythema Throat Pain), heat diseases of the Lung and Sanjiao, unilateral tonsillar swelling, pain in the upper and lower teeth and both cheeks, trismus (lockjaw), swelling and redness of the neck and nape, headache due to Kidney deficiency, dizziness due to Liver jue, and wind-headache after intoxication.
Shaohai (SI8): Located in the depression on the lateral side of the medial epicondyle of the humerus, five fen away from the end of the elbow. Take the point with the arm flexed towards the head. This is the He-Sea point where the Hand-Taiyang Small Intestine meridian enters. Needle depth: two fen; retain needle for seven breaths; moxibustion: five cones. Indications include pain in the elbow, arm, shoulder, neck, and nape, as well as pain in the throat and gums.