（是经起于睛明穴，终于至阴穴。）
膀胱足太阳之脉，起于目内 ，上额交巅。其支者，从巅至耳上角。其直者，从巅入络脑，还出别下项，
循肩膊内，挟脊抵腰中，入循膂，络肾属膀胱。其支者，从腰中下挟脊，贯臀入 中。其支者，从膊内左右，
别下贯胛，挟脊内，过髀枢，循髀外，从后廉下合 中，以下贯 内，出外踝之后，循京骨，至小趾外侧。是
动则病冲头痛，目似脱，项如拔，脊痛腰似折，髀不可以曲， 如结， 如裂，是为踝厥。是主筋所生病者，
痔，疟，狂癫疾，头囟项痛，目黄泪出，鼽衄，项背腰尻 脚皆痛，小趾不用。为此诸病，盛则泻之，虚则
补之，热则疾之，寒则留之，陷下则灸之，不盛不虚，以经取之。盛者人迎大再倍于寸口，虚者人迎反小于寸
口也。
头顶上为巅，脑后为项，肩后之下为肩膊，椎骨为脊，尻上横骨为腰，挟脊为膂，挟腰髋骨两旁为机，机
后为臀，膝后屈处为 ，股外为髀，捷骨之下为髀枢，腓肠为 。
足太阳之脉，受手太阳之交，起目内 睛明穴，上额，循攒竹，过神庭，历曲差、五处、承光、通天，自
通天斜行左右，交于顶上之百会。其支者，从巅至百会，抵耳上角。以上一经脉、一络脉，上行于头者也。其
直行者，由通天、络却、玉枕入络脑，复出下项以抵天柱，又由天柱而下循肩膊内，挟脊两旁相去各一寸半，
下行于大杼、风门诸俞，由是抵腰中，入循膂络肾，下属膀胱。其支别者，从腰中循腰髋，下挟脊，历上 、
次、中 、下 、会阳，下贯臀，至承扶、殷门、浮 、委阳，入 中之委中穴。其支别者，为挟脊两旁第
二行，相去各三寸之诸穴，自天
柱而下，从膊内左右，别行下贯胛膂，历附分、魄户、膏肓、神堂、 、膈关、魂门、阳纲、意舍、胃仓、
肓门、志室、胞肓、秩边，下历尻臀，过髀枢，又循髀枢之里、承扶之外一寸五分之间而下，与前之入 中者
相合，下行循合阳，下贯 内，历承筋、承山、飞扬、跗阳，出外踝后之昆仑、仆参、申脉、金门，循京骨、
束骨、通谷，至小趾外侧之至阴穴，以交于足少阴肾经也。
足太阳膀胱经的脉气，起始于目内眦，向上到达额部，交会于头顶。它的分支，从头顶行至耳上角。它的主干，从头顶进入颅内联络脑部，复出后向下经过项部，沿着肩胛内侧，夹着脊柱抵达腰部，深入体内联络肾脏，归属于膀胱。它的另一分支，从腰部下行，夹着脊柱，穿过臀部进入腘窝中。再一个分支，从肩胛内侧左右分开，向下穿过肩胛骨，夹着脊柱内侧，经过髋关节，沿着大腿外侧后缘下行，在腘窝中与前面的分支汇合，然后向下穿过小腿肚，出于外踝后方，沿着京骨穴，到达小趾外侧端。当本经发生病变时，会出现冲头痛、眼睛像要脱出、颈部像被拔起、脊痛腰痛像折断、大腿不能弯曲、腘窝拘急像打结、小腿肚疼痛像撕裂一样等症状，这称为“踝厥”。本经主治筋所发生的疾病，如痔疮、疟疾、狂癫病、头囟项部疼痛、目黄流泪、鼻塞鼻出血、项背腰尻及脚部皆痛、小趾活动不利等。对于这些病症，实证用泻法，虚证用补法，热证用疾刺法，寒证用留针法，阳气下陷用灸法，不虚不实则取本经穴位治疗。实证表现为人迎脉搏动比寸口大两倍以上，虚证则人迎脉搏动反而小于寸口。
头顶上部称为巅，脑后称为项，肩后下方称为肩膊，脊椎骨称为脊，尻骨上方的横骨称为腰，夹着脊柱的肌肉称为膂，夹着腰和髋骨两旁称为机，机后面称为臀，膝盖后方弯曲处称为腘，大腿外侧称为髀，捷骨之下称为髀枢，腓肠肌称为腨。
足太阳膀胱经的脉气，接受手太阳小肠经的交接，起始于目内眦的睛明穴，向上至额部，沿着攒竹穴，经过神庭穴，依次经过曲差、五处、承光、通天穴，从通天穴斜行向左右，交会于头顶的百会穴。它的分支，从巅顶至百会，抵达耳上角。以上这一条经脉和一条络脉，是上行于头部的。它的主干，由通天、络却、玉枕穴进入颅内联络脑部，复出后下行至项部抵住天柱穴，又从天柱穴向下沿着肩膊内侧，夹着脊柱两旁各一寸半的距离，下行经过大杼、风门等俞穴，由此抵达腰部，深入体内沿着膂联络肾脏，向下属于膀胱。它的别行分支，从腰部沿着腰髋，向下夹着脊柱，依次经过上髎、次髎、中髎、下髎、会阳穴，向下穿过臀部，至承扶、殷门、浮郄、委阳穴，进入腘窝中的委中穴。它的另一别行分支，是夹着脊柱两旁第二行、相距各三寸的那些穴位，从天柱穴向下，从肩膊内侧左右分开，向下穿过肩胛和膂，依次经过附分、魄户、膏肓、神堂、膈关、魂门、阳纲、意舍、胃仓、肓门、志室、胞肓、秩边穴，向下经过尻部和臀部，经过髋关节，又沿着髋关节内侧、承扶穴外侧一寸五分之间下行，与前面进入腘窝的分支相汇合，向下沿着合阳穴，向下穿过小腿肚，依次经过承筋、承山、飞扬、跗阳穴，出于外踝后方的昆仑、仆参、申脉、金门穴，沿着京骨、束骨、通谷穴，到达小趾外侧端的至阴穴，以交于足少阴肾经。
(This meridian originates at the Jingming (BL1) acupoint and terminates at the Zhiyin (BL67) acupoint.)
The Foot-Taiyang Bladder Channel of Hand-Yangming starts from the inner canthus, ascends to the forehead, and intersects at the vertex. Its branch extends from the vertex to the upper angle of the ear. The main trunk enters the brain from the vertex, emerges again, descends separately through the nape, follows the medial aspect of the shoulder blade, flanks the spine to reach the middle of the waist, enters internally to connect with the Kidney and belongs to the Bladder. Another branch descends from the middle of the waist, flanking the spine, penetrates the buttocks, and enters into the popliteal fossa. A further branch separates on the left and right from the medial aspect of the shoulder blade, descends separately penetrating the scapula, flanks the interior of the spine, passes through the hip pivot, follows the lateral posterior aspect of the thigh, and merges in the popliteal fossa from the posterior margin. It then descends through the calf muscle, emerges posterior to the lateral malleolus, follows the Jinggu (BL64) acupoint, and reaches the lateral side of the little toe. When this channel is disturbed, it causes disease characterized by headache striking upwards, eyes feeling as if they are falling out, the neck feeling as if being pulled, back pain and waist pain as if broken, inability to flex the thigh, stiffness in the popliteal region as if knotted, and pain in the calf as if torn; this is called "Huai Jue" (Ankle-Jue). This channel governs diseases related to the sinews, including hemorrhoids, malaria, mania and epilepsy, pain in the vertex, occiput, and neck, yellowing of the eyes with tearing, nasal congestion and epistaxis, pain throughout the neck, back, loins, sacrum, and feet, and dysfunction of the little toe. For these various diseases, excess conditions are treated with draining methods, deficiency conditions with tonifying methods, heat conditions with rapid needling, cold conditions with retained needling, sinking conditions with moxibustion, and neither-excess-nor-deficiency conditions are treated by selecting points from the channel itself. Excess conditions present with the Renying (ST9) pulse being more than twice as large as the Cunkou (Radial) pulse; deficiency conditions present with the Renying pulse being smaller than the Cunkou pulse.
The upper part of the head is called the Vertex (Dian), the back of the neck is called the Nape (Xiang), the lower posterior aspect of the shoulder is called the Shoulder Blade (Jianbo), the vertebral column is called the Spine (Ji), the transverse bone above the sacrum is called the Waist (Yao), the muscles flanking the spine are called the Diaphragm Muscles (Lv), the sides flanking the waist and hip bones are called the Pivot (Ji), the area posterior to the Pivot is called the Buttocks (Tun), the flexed area behind the knee is called the Popliteal Fossa (Nao), the lateral aspect of the thigh is called the Thigh (Bi), the area below the Jieguc bone is called the Hip Pivot (Bishu), and the gastrocnemius is called the Calf Muscle (Shuan).
The Foot-Taiyang Bladder Channel receives the intersection from the Hand-Taiyang Small Intestine Channel. It originates at the Jingming (BL1) acupoint in the inner canthus, ascends to the forehead, follows the Canzhu (BL1) acupoint, passes through the Shenting (GV24) acupoint, traverses the Qucha (BL8), Wuchu (BL8), Chengguang (BL9), and Tongtian (BL7) acupoints. From Tongtian, it runs obliquely to the left and right, intersecting at the Baihui (GV20) acupoint on the vertex. Its branch extends from the vertex to Baihui, reaching the upper angle of the ear. These one meridian and one collateral vessel ascend to the head. The main trunk enters the brain via the Tongtian (BL7), Luoque (BL9), and Yuzhen (GB9) acupoints, emerges again to descend to the nape to reach the Tianzhu (BL10) acupoint. From Tianzhu, it descends along the medial aspect of the shoulder blade, flanking the spine at a distance of 1.5 cun on each side, descending through the Dazhu (BL11), Fengmen (BL12), and other Shu points. Thereby, it reaches the middle of the waist, enters internally along the Lv muscles to connect with the Kidney, and descends to belong to the Bladder. Its divergent branch follows the waist and hips from the middle of the waist, descends flanking the spine, traverses the Shangliao (BL31), Ciliao (BL32), Zhongliao (BL33), Xialiao (BL34), and Huiyang (BL35) acupoints, descends through the buttocks to the Chengfu (BL36), Yinmen (BL37), Fupi (BL38), and Weiyang (BL39) acupoints, and enters the Weizhong (BL40) acupoint in the popliteal fossa. Another divergent branch consists of the acupoints in the second row flanking the spine, 3 cun apart on each side. Descending from Tianzhu (BL10), it separates on the left and right from the medial aspect of the shoulder blade, descends separately penetrating the scapula and Lv muscles, traversing the Fufen (BL17), Pohu (BL42), Gohuang (BL43), Shentang (BL44), Ge Guan (BL48), Hunmen (BL47), Yanggang (BL46), Yishe (BL45), Weicang (BL45), Huangmen (BL52), Zhishi (BL52), Baohuang (BL54), and Zhbian (BL54) acupoints. It descends through the sacral and gluteal regions, passes through the hip pivot, and follows the medial aspect of the hip pivot, between 1.5 cun external to Chengfu (BL36), descending to merge with the branch that previously entered the popliteal fossa. It descends along Heyang (BL56), penetrates the calf muscle, traverses the Chengjin (BL57), Chengshan (BL58), Feiyang (BL58), and Fuyang (BL59) acupoints, emerges posterior to the lateral malleolus at the Kunlun (BL60), Pucan (BL61), Shenmai (BL62), and Jinmen (BL63) acupoints, follows the Jinggu (BL64), Shugu (BL65), and Tonggu (BL66) acupoints, and reaches the Zhiyin (BL67) acupoint on the lateral side of the little toe, thereby connecting with the Foot-Shaoyin Kidney Channel.