手少阴之脉。起于心中。出属心系。下膈。络小肠（小肠心之维。故下膈络小肠也）。其
支者
从心系。上挟咽。系目系。其直者。复从心系。却上肺。下出腋下。循 内后廉。行手太
阴心主之后（太阴心主。行 之前。而少阴出其后也）。下肘内廉（肘内横文。少海所居）。循
臂内后廉。抵掌后（灵道在掌后。同身寸之一寸五分）。锐骨之端（神门穴分也）。入掌内后廉
（少府所居）。循小指之内出其端（少冲居此。小指内。则手少阴自此方入手太阳也）。是动则
病（手少阴常少血多气。今气先病。是为是动也）。嗌干心痛。渴而欲饮。是谓臂厥。是主心
所生病者（血受病于气。是气之所生。故云所生病也）。目黄胁痛。 臂内后廉痛。厥掌中热
盛者寸口大。再倍于人迎。虚者寸口反小于人迎也（心者。君主。其实坚固。不受诸邪。
邪客之则死矣。其有病。乃在心之包络也。故治病者。治包络之经。无绝其经君焉。故灵枢
经曰。少阴无愈外经受邪者。正谓此也）。
手少阴之别。名曰通里。去腕一寸。别而上行。循经入于心中。系舌本。属目系。其实
则支膈。虚则不能言。取之掌后一寸。别走太阳也。
手太阴之筋。起于小指之内侧。结于锐骨。上结肘内廉。上入腕。交太阴。侠乳里。结
于胸
中。循贲下系于脐。其病内急。心承伏梁。下为肘纲。其病当所过者。支转筋痛。治在燔针
劫刺以知为数。以痛为输。其成伏梁。唾血脓者。死不治。经筋之病。寒。则反折筋急。
热。则筋弛纵不收。阴痿不用。阳急则反折。阴急则俯不伸。淬刺者。刺寒急也。热则筋纵
不收。无用燔针。名曰。季冬痹也。
心病者。胸中痛。胁支满。胁下痛膺背肩脾间痛。两臂内痛。虚则胸腹大。胁下与腰相
引而
痛。取其经少阴。太阳。舌下血者其变病。刺隙中出血。心热病者。先不乐。数日乃热。热
争则卒心痛。烦闷。善呕。头痛面赤。无汗。壬癸甚。丙丁大汗。气逆则壬癸死。刺手少阴
太阳。
手少阴心经。从腹走手。长三尺五寸。左右共七尺。凡一十八穴。
极泉二穴。青灵二穴。少海二穴。灵道二穴。通里二穴。阴 二穴。神门二穴。少府二
穴。少冲二穴。
手少阴心经的经脉，起始于心脏内部，出来归属于心系（连接心脏的组织），向下穿过膈肌，联络小肠（因为小肠是心的表里配合脏腑，所以经脉下行穿过膈肌联络小肠）。它的分支从心系向上，挟持咽喉，连系目系（眼球连系脑部的脉络）；它的直行部分，再从心系返回，上行进入肺脏，向下出于腋下，沿着上臂内侧后缘，行于手太阴肺经和手厥阴心包经的后面（手太阴和手厥阴经脉行于前，而手少阴心经行于其后）。向下经过肘部内侧边缘（肘横纹中，少海穴所在处），沿着前臂内侧后缘，到达手掌后方（灵道穴位于掌后一寸五分同身寸处），抵在豌豆骨端（神门穴的分界处），进入手掌内侧后缘（少府穴所在处），沿着小指内侧出其末端（少冲穴在此处，小指内侧，则手少阴心经从此转入手太阳小肠经）。
当经脉发生变动时（手少阴心经通常血少气多，现在气先发病，这称为“是动病”），会出现咽喉干燥、心痛、口渴想喝水的症状，这被称为“臂厥”。
本经主治心脏本身所生的疾病（血液受气的影响而生病，这是气所生成的病变，所以称为“所生病”），出现眼睛发黄、胁肋疼痛、手臂内侧后缘疼痛，如果掌心发热严重，则寸口脉比人迎脉大两倍；如果是虚证，则寸口脉反而小于人迎脉（心为君主之官，其体坚固，不受外邪直接侵犯，若邪气客犯于心则致死。现有的病症，实际上是在心的包络上。所以治病时，治疗心包络的经脉，不要断绝心君的联系。因此《灵枢经》说：少阴经没有单独由外经受邪而愈的情况，正是说的这个意思）。
手少阴心经的别络，名叫通里，距离腕横纹一寸处，分出后向上行走，沿经脉进入心中，连系舌根，属于目系。实证表现为胸膺支撑胀满，虚证表现为不能说话。治疗取掌后一寸处的穴位，此络脉别走手太阳小肠经。
手太阴肺经的筋，起始于小指内侧，结聚于豌豆骨，向上结于肘部内侧，向上进入手腕，与手太阴肺经相交，夹行于乳内，结聚于胸中，沿贲门向下连系于脐部。其病症表现为体内拘急，心脏下方有伏梁积块，下部形成肘纲。在其循行部位出现的症状，包括支撑感、转筋和疼痛。治疗采用燔针（烧红的针）劫刺，以见效为度，以疼痛点作为腧穴。如果发展成伏梁病，且咳唾脓血，则属死症，无法治愈。经筋的病，受寒则导致身体反折、筋脉拘急；受热则筋脉弛缓松弛不收，导致阳痿不用。阳气急则身体反折，阴气急则俯身不能伸直。淬刺法是用来治疗寒性筋急的。热证则筋脉纵缓不收，不能用燔针。这种病名叫季冬痹。
心脏病的症状，表现为胸中疼痛，胁肋部支撑胀满，胁下疼痛，以及胸膺、背部、肩胛间疼痛，两臂内侧疼痛。虚证表现为胸腹部胀大，胁下与腰部相互牵引而痛。治疗取手少阴心经和手太阳小肠经，以及舌下的血络放血。其变病，可刺郄穴出血。心热病患者，先出现心情不愉快，几天后才发热。热邪与正气相争，则突然心痛，烦闷，容易呕吐，头痛，面色发红，无汗。病情在壬癸日（水日）加重，在丙丁日（火日）大汗出。如果气机逆乱，则在壬癸日死亡。治疗针刺手少阴心经和手太阳小肠经。
手少阴心经，从腹部走向手部，长三尺五寸，左右两侧共七尺。共有十八个穴位。
极泉穴二穴，青灵穴二穴，少海穴二穴，灵道穴二穴，通里穴二穴，阴郄穴二穴，神门穴二穴，少府穴二穴，少冲穴二穴。
The meridian of Hand-Shaoyin (Heart) originates from within the heart, emerges to connect with the Heart System (tissues connecting the heart), descends through the diaphragm, and links with the Small Intestine (as the Small Intestine is the interior-exterior pair of the Heart, the meridian descends through the diaphragm to link with it). Its branch arises from the Heart System, ascends along the sides of the pharynx, and connects with the Eye System (the connection between the eyeball and the brain). The main trunk, returning from the Heart System, ascends into the Lung, then descends to emerge from the axilla, follows the posterior medial border of the upper arm, running posterior to the meridians of Hand-Taiyin (Lung) and Hand-Jueyin (Pericardium) (while Hand-Taiyin and Hand-Jueyin run anteriorly, Hand-Shaoyin runs posteriorly). It descends along the medial border of the elbow (where Shaohai [HT3] is located at the medial end of the transverse cubital crease), continues along the posterior medial border of the forearm, reaches the posterior aspect of the wrist (Lingdao [HT4] is located 1.5 cun proximal to the wrist crease using equal-body measurement), arrives at the end of the styloid process of the ulna (the boundary of Shenmen [HT7]), enters the posterior medial aspect of the palm (where Shaofu [HT8] is located), follows the medial side of the little finger to its tip (Shaochong [HT9] is located here; on the medial side of the little finger, Hand-Shaoyin thus transitions to Hand-Taiyang [Small Intestine]).
When the meridian undergoes change (Hand-Shaoyin typically has less blood and more Qi; if Qi becomes diseased first, this is called "Is Dong" disease), symptoms include dryness of the throat, heart pain, thirst with desire to drink, which is termed "Arm Jue" (Arm Reversal).
This meridian governs diseases generated by the Heart itself (when blood is diseased due to Qi, it is a disease generated by Qi, hence called "Suo Sheng Bing"). Symptoms include yellowing of the eyes, hypochondriac pain, pain along the posterior medial aspect of the arm, and excessive heat in the palm. If the pulse at Cun Kou (radial artery) is twice as large as Ren Ying (carotid artery), it indicates excess; if deficient, Cun Kou is smaller than Ren Ying (The Heart is the Sovereign Lord, solid and resistant to external pathogens; if pathogens invade the Heart directly, death ensues. Existing pathologies are actually in the Pericardium. Therefore, treatment targets the Pericardium meridian without severing the connection to the Sovereign. Thus, the *Ling Shu* states: "Shaoyin does not heal from external meridian invasion," referring precisely to this principle).
The collateral vessel of Hand-Shaoyin is named Tongli (通里), located one cun distal to the wrist crease, diverging and ascending along the meridian into the heart, connecting with the root of the tongue, and belonging to the Eye System. In excess conditions, it causes distension and fullness in the chest and diaphragm; in deficiency conditions, it causes inability to speak. Treatment involves needling one cun proximal to the wrist, where the collateral diverges to the Taiyang meridian.
The sinews of Hand-Taiyin (Lung) originate from the medial side of the little finger, knot at the styloid process, ascend to knot at the medial border of the elbow, enter the wrist, intersect with Hand-Taiyin, run alongside the inner breast, and knot in the chest. They follow the贲 (Bren/epiglottis area) downward to tie with the umbilicus. Pathological manifestations include internal tension, a Fu Liang (hidden beam mass) under the heart, and lower formation of an elbow cord. Symptoms at affected sites include support sensations, spasms, and pain. Treatment employs burning needle (Fan Zhen) rapid puncture, taking efficacy as the count and pain points as acupoints. If it develops into Fu Liang with hemoptysis and purulent sputum, it is incurable and fatal. Sinew diseases caused by cold result in body reversal and tendon spasm; those caused by heat result in flaccidity and relaxation, leading to impotence and dysfunction. Yang excess causes body reversal; Yin excess causes flexion inability. Quenching needling treats cold-induced spasm. Heat causes flaccidity and should not be treated with burning needles. This condition is named Ji Dong Bi (Winter Solstice Bi).
Heart disease presents with pain in the chest, distension and fullness in the hypochondrium, pain below the hypochondrium, pain in the chest, back, and scapular region, and pain in the medial aspect of both arms. Deficiency manifests as abdominal distension and pain radiating from the hypochondrium to the waist. Treatment involves selecting the Hand-Shaoyin and Hand-Taiyang meridians, and bleeding the sublingual vessels. For variant conditions, bleed from Xi-Cleft points. Heart Heat Disease begins with dysphoria, followed by fever after several days. When heat struggles with righteous Qi, sudden heart pain, irritability, frequent vomiting, headache, facial redness, and anhidrosis occur. Symptoms worsen on Ren-Gui days (Water days) and sweat profusely on Bing-Ding days (Fire days). If Qi rebels, death occurs on Ren-Gui days. Treatment involves needling Hand-Shaoyin and Hand-Taiyang meridians.
The Hand-Shaoyin Heart Meridian travels from the abdomen to the hand, measuring three chi five cun in length, totaling seven chi for both sides. It contains eighteen acupoints in total:
Jiquan (HT1) x2, Qingling (HT12) x2, Shaohai (HT3) x2, Lingdao (HT4) x2, Tongli (HT5) x2, Yinxi (HT6) x2, Shenmen (HT7) x2, Shaofu (HT8) x2, Shaochong (HT9) x2.