经云∶脾胃者，仓廪之官，五味出焉。又云∶胃者，水谷气血之海也。又云∶胃大一
尺五寸，径五寸，长二尺六寸，横屈，受水谷三斗五升，其中之谷，常留二斗，水一斗五
升而满。又云∶是经多气少血。
《难经》曰∶胃重二斤一两。
张介宾曰∶胃之上口名曰贲门，饮食之精气，从此上输于脾肺，宣布于诸脉。胃之
下口，即小肠上口，名曰幽门。
\r足阳明胃腑图\p06-d43a53.bmp\r
胃足阳明之脉，起于鼻之交 中，旁约太阳之脉，下循鼻外，入上齿中，还出侠口环
唇，下交承浆，却循颐后下廉，出大迎循颊车，上耳前，过客主人，循发际，至额颅。其
支者，从大迎前下人迎，循喉咙，入缺盆，下膈，属胃，络脾。其直者，从缺盆下乳内廉，
下侠脐，入气街中。其支者，起于胃下口，循腹里，下至气街中而合，以下髀关抵伏兔，下
膝膑中，下循胫外廉，下足跗，入中趾内间；其支者，下廉穴三寸而别，入中趾外间；其
支者，别跗上，入大趾间，出其端。
\r胃经循行图\p06-d43a54.bmp\r
胃足阳明交鼻起，下循鼻外入上齿，还出侠口绕承浆，颐后大迎颊车里，耳前发际
到额颅，支下人迎缺盆底，下膈入胃络脾宫，直者缺盆下乳内，一支幽门循腹中，下行直
合气街逢，遂由髀关抵膝膑， 跗足趾内间同；一支下膝注三里，前出中趾外间通，一
支别走足跗趾，大趾之端经尽已。
【注】足阳明胃经之脉，起于鼻者，是谓
由迎香穴上交颊中两旁，约过足太阳脉之睛明穴，分下循鼻外，始交于足阳明之承泣、四
白、巨 穴也；从巨 入上齿中，还出侠口之地仓穴；还绕唇下，交会任脉之承浆穴，却
循颐后下廉，复交本经之大迎穴，由大迎出循颊车穴，上行耳前，过客主人穴，合少阳
经，循发际至额颅两旁之悬颅穴、颔厌穴，复交足阳明之头维穴下关穴。其支者，行大迎
穴，从大迎前循人迎、水突穴、气舍穴，循喉咙入缺盆穴，下膈属胃络脾，散布脏腑。其
直者，从缺盆穴，直行气户、库房、屋翳、膺窗、乳中、乳根等穴下乳内廉、不容穴也；从
不容循承满、梁门、关门、太乙、滑肉门等穴下侠脐天枢穴也；从天枢、外陵、大巨、水
道、归来等穴，入气街中，气冲穴也。其支者，起于胃口，是谓前之属胃络脾之支，下
循腹里，下至气街中而合气街穴，会冲脉上行者也；其下行本经者，髀关穴也。抵伏兔
至伏兔穴下，从伏兔行阴市穴、梁丘穴，下
膝膑中犊鼻穴，循足三里上巨虚、条口、下巨虚等穴，下循胫外廉，丰隆穴也；从丰隆
循解溪穴，下足跗，冲阳穴也；从冲阳行陷谷穴、内庭穴，入次趾外间也。其本支别支，
一自下巨虚穴下入次趾外间；一别循跗上入大趾次趾间厉兑穴，出其端，交于足太阴脾经也。
【按】足阳明是足大趾之次趾，不是中趾，必传写之误。
经文说：脾胃，是掌管饮食消化的官员，五味（酸、苦、甘、辛、咸）由此化生。又说：胃，是水谷和气血汇聚的海洋。又说：胃的口径大一尺五寸，直径五寸，长二尺六寸，弯曲横置，能容纳水谷三斗五升，其中谷物常留二斗，水一斗五升，从而充满。又说：这条经脉多气少血。
《难经》说：胃重二斤一两。
张介宾说：胃的上口名叫贲门，饮食的精微之气，从此处向上输送到脾和肺，散布到各条经脉。胃的下口，即小肠的上口，名叫幽门。
足阳明胃腑图
足阳明胃经的经脉，起于鼻翼两侧交会的部位，旁边约束足太阳膀胱经的脉气，向下沿鼻外侧行走，进入上齿中，再出来夹着口角环绕嘴唇，向下交会于承浆穴，然后沿着腮后下方下行，出大迎穴，沿颊车穴上行至耳前，经过客主人穴，沿发际线，到达额颅部。它的分支，从大迎穴前方下行到人迎穴，沿喉咙，进入缺盆穴，向下穿过膈肌，属于胃，联络脾脏。它的直行者，从缺盆穴向下沿乳内侧，下行夹脐两旁，进入气街中。它的另一分支，起于胃的下口，沿腹腔内部下行至气街中与直行脉会合，向下经过髀关穴，抵达伏兔穴，下行至膝盖髌骨中，沿小腿外侧前缘下行，下至足背，进入中趾内侧间隙；它的另一分支，在膝下三寸的足三里穴处分出，进入中趾外侧间隙；它的另一分支，从足背分出，进入大趾与中趾之间，出于其末端。
胃经循行图
足阳明胃经从鼻旁起始，向下沿鼻外侧进入上齿，再出来夹口环绕承浆，经过颐后、大迎、颊车，上行至耳前、发际，到达额颅。分支下行至人迎、缺盆底，穿过膈肌入胃络脾。直行者从缺盆下至乳内，一支从幽门沿腹中下行，直合于气街。随后由髀关抵达膝膑，下行至足跗和中趾内侧；一支下行至膝下注于足三里，向前出于中趾外侧相通；一支别行于足背趾间，终于大趾末端。
【注】足阳明胃经的经脉，起于鼻部，是指从迎香穴向上交会于面颊中部两旁，约过足太阳膀胱经的睛明穴，分头向下沿鼻外侧，开始交会于足阳明胃经的承泣、四白、巨髎穴；从巨髎穴进入上齿中，再出来夹口至地仓穴；再绕唇下，交会任脉的承浆穴，然后沿腮后下方，又交会本经的大迎穴，由大迎穴出而沿颊车穴上行至耳前，经过客主人穴，与少阳经相合，沿发际至额颅两旁的悬颅穴、颔厌穴，又交会足阳明胃经的头维穴、下关穴。它的分支，行于大迎穴，从大迎穴前方循行人迎、水突、气舍穴，沿喉咙进入缺盆穴，向下穿过膈肌属于胃并联络脾，散布于脏腑。它的直行者，从缺盆穴，直行经过气户、库房、屋翳、膺窗、乳中、乳根等穴，下至乳内廉的不容穴；从不容穴沿承满、梁门、关门、太乙、滑肉门等穴，下行夹脐至天枢穴；从天枢、外陵、大巨、水道、归来等穴，进入气街中的气冲穴。它的分支，起于胃口，是指前面属胃络脾的那支分支，向下沿腹腔内部，下行至气街中与气街穴会合，此处与冲脉上行相会；其下行于本经的，是髀关穴。抵达伏兔，至伏兔穴下方，从伏兔穴行经阴市穴、梁丘穴，下行至膝盖髌骨中的犊鼻穴，沿足三里、上巨虚、条口、下巨虚等穴，向下沿小腿外侧前缘，至丰隆穴；从丰隆穴沿解溪穴，下至足背，至冲阳穴；从冲阳穴行经陷谷穴、内庭穴，进入次趾（第二趾）外侧间隙。其本经的分支和其他分支，一支自下巨虚穴下行进入次趾外侧间隙；一支别行沿足背进入大趾与次趾之间的厉兑穴，出于其末端，交会于足太阴脾经。
【按】足阳明胃经所至之处，所谓“中趾”，实为足大趾旁边的第二趾（次趾），并非真正的中趾，这必定是传抄书写时的错误。
The Classic states: The spleen and stomach are the officials responsible for granaries, from which the five flavors arise. It is also stated: The stomach is the sea of water and grain, qi and blood. Furthermore: The stomach has a circumference of one chi and five cun, a diameter of five cun, and a length of two chi and six cun. It is curved horizontally and can hold three dou and five sheng of water and grain; typically, it retains two dou of grain and one dou and five sheng of water when full. It is also stated: This meridian is abundant in qi and deficient in blood.
The Nan Jing (Classic of Difficult Issues) states: The stomach weighs two jin and one liang.
Zhang Jiebin states: The upper opening of the stomach is called the贲门 (Bimen, cardia). The essence of food and drink is transported upward from here to the spleen and lungs and distributed through the various vessels. The lower opening of the stomach, which is the upper opening of the small intestine, is called the 幽门 (Youmen, pylorus).
Foot Yangming Stomach Meridian Diagram
The Foot-Yangming Stomach Meridian begins at the intersection beside the nose, adjacent to and constraining the Foot-Taiyang Bladder Meridian. It descends along the lateral side of the nose, enters the upper teeth, emerges to flank the mouth and encircle the lips, descends to intersect with Chengjiang (CV24), then follows the posterior aspect of the mandible downward, emerges at Daying (ST5), follows Jiache (ST6), ascends anterior to the ear, passes through Guest Master (Tougu, GB13), follows the hairline, and reaches the frontal skull. A branch descends from the anterior aspect of Daying to Renying (ST9), follows the throat, enters the Supraclavicular Fossa (Quepen, ST12), descends through the diaphragm, connects with the Stomach, and links with the Spleen. The main trunk descends from Quepen along the medial aspect of the breast, passes flanking the umbilicus, and enters the Qi Street (Qichong, ST30). Another branch originates from the lower opening of the Stomach, travels within the abdominal cavity, and meets the main trunk at the Qi Street. From there, it descends to Biguan (ST31), reaches Futu (ST32), descends into the knee patella region, follows the lateral aspect of the tibia, descends to the dorsum of the foot, and enters the space between the medial aspects of the second toe. Another branch diverges three cun below the knee at Zusanli (ST36), entering the lateral space of the second toe. Yet another branch diverges from the dorsum of the foot, enters the space between the first and second toes, and emerges at its tip.
Stomach Meridian Course Song
The Foot-Yangming starts at the nose, descends laterally to enter the upper teeth, emerges to flank the mouth and surround Chengjiang, passes behind the jaw, Daying, and Jiache, ascends anterior to the ear, follows the hairline to the frontal skull. A branch descends to Renying and the base of the Supraclavicular Fossa, penetrates the diaphragm to enter the Stomach and link the Spleen. The straight course descends from the Supraclavicular Fossa to the medial breast; one branch follows the abdomen from Youmen, descending to meet the Qi Street. Then it proceeds via Biguan to the knee patella, reaching the dorsum and medial second toe. Another branch descends from the knee to Zusanli, emerging anteriorly to connect with the lateral second toe. A third branch diverges on the foot dorsum between the toes, ending at the tip of the big toe.
[Note] The Foot-Yangming Stomach Meridian begins at the nose, meaning it intersects bilaterally at Yingxiang (LI20) from the mid-face, passing near Jingming (BL1) of the Foot-Taiyang Bladder Meridian. It then descends laterally along the nose, initially intersecting the Stomach Meridian points Chengqi (ST1), Sibai (ST2), and Juliao (ST3). From Juliao, it enters the upper teeth, emerges to flank the mouth at Dicang (ST4), circles the lips inferiorly, intersects with Renmai’s Chengjiang (CV24), then follows the posterior mandible to intersect Daying (ST5) of the same meridian. From Daying, it follows Jiache (ST6) upward anterior to the ear, passes Tougu (GB13), merges with the Shaoyang Meridian, follows the hairline to Xuanlu (GB7) and Hanyan (GB7) on the sides of the frontal skull, then intersects Toubwei (ST8) and Xiaguan (ST7) of the Foot-Yangming Stomach Meridian. Its branch travels from Daying, passing anteriorly through Renying (ST9), Shuitu (ST10), and Qishe (ST11), follows the throat into Quepen (ST12), descends through the diaphragm to belong to the Stomach and link the Spleen, distributing to the zang-fu organs. The straight course descends from Quepen directly through Qihu (ST15), Fukuang (ST16), Wuyi (ST17), Yingchuang (ST18), Ruzhong (ST18), Rugen (ST18), etc., down to the medial breast and Burong (ST19). From Burong, it follows Chengman (ST20), Liangmen (ST21), Guanmen (ST22), Taiyi (ST23), and Rouhoumen (ST24) down to Tianshu (ST25) flanking the umbilicus. From Tianshu, Wailing (ST26), Daju (ST27), Shuidao (ST28), and Guilai (ST29), it enters the Qi Street, specifically Qichong (ST30). Its branch originates from the stomach opening, referring to the branch that belongs to the Stomach and links the Spleen mentioned earlier; it descends within the abdominal cavity and meets the Qi Street point, where it converges with the ascending Chong Mai (Penetrating Vessel). The portion descending along this meridian includes Biguan (ST31). Reaching Futu (ST32), it passes Yinshi (ST33) and Liangqiu (ST34) below Futu, descends into the knee patella at Dubi (ST35), follows Zusanli (ST36), Shangjuxu (ST37), Tiaokou (ST38), and Xiajuxu (ST39), descends along the lateral tibia to Fenglong (ST40). From Fenglong, it follows Jiaoxi (ST41), descends to the foot dorsum to Chongyang (ST42). From Chongyang, it passes Xangu (ST43) and Neiting (ST44), entering the lateral space of the second toe. One branch diverges from Xiajuxu (ST39) to enter the lateral space of the second toe; another branch diverges along the foot dorsum to Lijue (ST45) between the big toe and second toe, emerging at its tip to intersect with the Foot-Taiyin Spleen Meridian.
[Commentary] The "middle toe" referred to in the context of the Foot-Yangming Meridian actually denotes the second toe (lateral to the hallux), not the anatomical middle toe. This is certainly an error in transcription or copying.