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《难经》云∶脾重二斤三两，扁广三寸，长五寸，有散膏半斤。主裹血，温五脏，主藏意。《素问·灵兰秘典论》云∶
脾胃者，仓禀之官，五味出焉。
《本藏》篇云∶脾小则藏安，难伤于邪也，脾大则苦凑 而痛，不能疾行。脾高则 引季胁而痛；脾下则下加于大
肠，下加于大肠则藏苦受邪。脾坚则脏安难伤；脾脆则善病消痹易伤。脾端正则和利难伤；脾偏倾则善满善胀也。又云∶
黄色小理者脾小，粗理者脾大。揭唇者脾高，唇下纵者脾下。唇坚者脾坚，唇大而不坚者脾脆。唇上下好者脾端正，唇
偏举者脾偏倾也。
足太阴脾中洲，二十一穴隐白游，赴大都兮瞻太白，访公孙兮至商丘，越三阴之交而漏谷地机可即，步阴凌之泉
而血海箕门是求，入冲门兮府舍轩豁，解腹结兮大横优游，腹哀食窦兮接天溪而同派，胸乡周荣兮缀大包而如钩。
大趾端内侧隐白，节后陷中求大都，太白内侧核骨下，节后一寸公孙呼。商丘内踝微前陷，踝上三寸三阴交，踝上
六寸漏谷是，踝上五寸地机朝。膝下内侧阴陵泉（与阳陵泉相对），血海膝膑上内廉，箕门穴在鱼腹取，动脉应手越筋
间。冲门期下尺五分（期门，肝经穴，巨阙旁四寸五分。巨阙，任脉穴，脐上六寸五分），府舍期下九寸看，腹结期下
六寸入，大横期下五寸半。腹哀期下方二寸，期门肝经穴道现，巨阙之旁四寸五，却连脾穴休胡乱。自此以上食窦穴，
天溪胸乡周荣贯，相去寸六无多寡，又上寸六中府换（肺穴），大包腋下有六寸，渊腋腋下三寸半（渊腋，胆经穴，腋下
三寸与脾大包穴相连）。
愚按∶马玄台曰∶中府，肺穴也。周荣、胸乡、天溪、食窦，脾经穴也。期门，肝经穴也。肝经之下有脾经之腹
哀、大横、腹结、府舍、冲门诸穴，则中行开四寸五分。三经之穴，上下相连，左右共四十二穴。
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足太阴脾经图
《难经》中说：脾的重量为二斤三两，形状扁平宽阔三寸，长度五寸，还有一块半斤重的散膏。脾的主要功能是包裹血液，温煦五脏，并主司藏意（精神意识中的思虑部分）。《素问·灵兰秘典论》中说：脾胃如同掌管粮仓的官员，五味（酸、苦、甘、辛、咸）由此化生而出。
《本藏》篇中说：脾脏较小则内脏安宁，不易受邪气侵袭；脾脏较大则会压迫胁肋部位并引起疼痛，导致行动不便。脾脏位置偏高会牵引季胁部位产生疼痛；脾脏位置偏低则会下压大肠，下压大肠则内脏容易受到邪气侵害。脾脏坚实则内脏安宁，难以受伤；脾脏脆弱则容易患消痹病（类似糖尿病或关节病变），且易受损伤。脾脏位置端正则功能调和，难以受伤；脾脏位置偏斜则容易发生腹部胀满和痞塞感。又说：面色黄而皮肤纹理细腻者，脾脏较小；皮肤纹理粗糙者，脾脏较大。嘴唇上翻者，脾脏位置偏高；唇下垂松弛者，脾脏位置偏低。嘴唇坚实者，脾脏坚实；嘴唇大而不坚实者，脾脏脆弱。嘴唇上下形态匀称者，脾脏位置端正；嘴唇偏向一侧隆起者，脾脏位置偏斜。
足太阴脾经位于中洲之地，共有二十一个穴位，从隐白穴开始游走。前往大都穴，瞻望太白穴，拜访公孙穴直至商丘穴。越过三阴交穴，漏谷穴和地机穴便可到达。步入阴陵泉穴，血海穴和箕门穴是寻求的目标。进入冲门穴，府舍穴显得开阔；解开腹结穴，大横穴悠然自在。腹哀穴、食窦穴接着天溪穴，同出一源；胸乡穴、周荣穴连接大包穴，如同钩状相连。
大脚趾内侧端是隐白穴，节后凹陷处寻找大都穴，太白穴在内侧核骨下方，节后一寸处呼作公孙穴。商丘穴在内踝前微前的凹陷处，内踝上三寸是三阴交穴，内踝上六寸是漏谷穴，内踝上五寸是地机穴。膝下内侧是阴陵泉穴（与阳陵泉相对），血海穴在膝盖髌骨上方内侧边缘，箕门穴在鱼腹肌肉处取穴，动脉跳动应手，穿过筋间。冲门穴在期门穴下方尺五分处（期门穴是肝经穴位，巨阙穴旁开四寸五分。巨阙穴是任脉穴位，脐上六寸五分），府舍穴在期门穴下方九寸处看，腹结穴在期门穴下方六寸处入，大横穴在期门穴下方五寸半处。腹哀穴在期门穴下方二寸处，期门穴是肝经穴位显现于此，巨阙穴旁开四寸五分，却连着脾经穴位，不要胡乱混淆。自此以上有食窦穴，天溪、胸乡、周荣贯穿其中，相距一寸六分没有多少差别，再向上寸六分换为中府穴（肺经穴位）。大包穴在腋下六寸处，渊腋穴在腋下三寸半处（渊腋穴是胆经穴位，腋下三寸，与脾经的大包穴相连）。
我按语：马玄台说：中府穴是肺经穴位。周荣、胸乡、天溪、食窦是脾经穴位。期门穴是肝经穴位。肝经之下有脾经的腹哀、大横、腹结、府舍、冲门等穴位，则中行（任脉）旁开四寸五分。这三条经脉的穴位，上下相连，左右共四十二个穴位。
足太阴脾经之图
Figure of the Foot-Taiyin Spleen Meridian
The *Nan Jing* (Classic of Difficult Issues) states: The spleen weighs two jin and three liang, is flat and broad with a width of three cun, and a length of five cun, accompanied by a half-jin weight of "scattered pancreas" (san gao). Its primary functions are to envelop blood, warm the five zang organs, and govern the storage of yi (intellect/thought). The *Su Wen · Ling Lan Mi Dian Lun* (Plain Questions: Secret Records of the Spiritual Pivot) states: The stomach and spleen are like the officials in charge of granaries; the five flavors emerge from them.
The *Ben Cang* chapter states: If the spleen is small, the zang organs are secure and difficult for pathogenic factors to injure; if the spleen is large, it causes pain due to compression against the hypochondrium, making rapid movement impossible. If the spleen is positioned high, it pulls on the costal region causing pain; if positioned low, it presses down upon the large intestine, and pressing upon the large intestine makes the zang organs susceptible to pathogenic invasion. If the spleen is firm, the zang organs are secure and hard to injure; if fragile, one is prone to xiao bi disease (wasting-thirst and numbness-bi) and easy injury. If the spleen is upright, its functions are harmonious and hard to injure; if tilted, one is prone to fullness and distension. It further states: Those with yellow complexion and fine skin texture have a small spleen; those with coarse skin texture have a large spleen. Those with everted lips have a high spleen; those with drooping lower lips have a low spleen. Those with firm lips have a firm spleen; those with large but unfirm lips have a fragile spleen. Those with symmetrical upper and lower lips have an upright spleen; those with lips bulging to one side have a tilted spleen.
The Foot-Taiyin Spleen Meridian resides in the central province, containing twenty-one acupoints starting from Yinbai (SP1). Proceeding to Dabu (SP2), viewing Taibai (SP3), visiting Gongsun (SP4) up to Shangqiu (SP5). Crossing Sanjinyiao (SP6), Loudong (SP7) and Dijji (SP8) can be reached. Stepping into Yinlingquan (SP9), Xuehai (SP10) and Jimen (SP11) are sought. Entering Chongmen (SP12), Fushhe (SP13) appears open; releasing Fujie (SP14), Daheng (SP15) lies leisurely. Fu'ai (SP16) and Shidou (SP17) connect to Tianxi (SP18), sharing the same source; Xiongxiang (SP19) and Zhourong (SP20) link to Dabao (SP21), hooked together.
Yinbai (SP1) is at the medial tip of the great toe; Dabu (SP2) is sought in the depression behind the joint; Taibai (SP3) is below the medial malleolus bone; Gongsun (SP4) is called one cun behind the joint. Shangqiu (SP5) is in the slight depression anterior to the medial malleolus; Sanjinyiao (SP6) is three cun above the medial malleolus; Loudong (SP7) is six cun above the medial malleolus; Dijji (SP8) faces five cun above the medial malleolus. Yinlingquan (SP9) is on the medial aspect below the knee (opposite Yanglingquan GB34); Xuehai (SP10) is on the medial margin above the patella; Jimen (SP11) is taken at the fish belly muscle, where the arterial pulse is felt passing between tendons. Chongmen (SP12) is located one cun and five fen below Qimen (LR14) (Qimen is a Liver meridian point, four cun and five fen lateral to Juque CV14. Juque is a Conception Vessel point, six cun and five fen above the umbilicus); Fushhe (SP13) is viewed nine cun below Qimen; Fujie (SP14) enters six cun below Qimen; Daheng (SP15) is five cun and half below Qimen. Fu'ai (SP16) is two cun below Qimen; Qimen is a Liver meridian point appearing here, four cun and five fen lateral to Juque, yet connecting to Spleen meridian points—do not confuse them. Above this lies Shidou (SP17); Tianxi (SP18), Xiongxiang (SP19), and Zhourong (SP20) run through. They are separated by one cun and six fen, with little variation; moving up another one cun and six fen changes to Zhongfu LU1 (Lung meridian point). Dabao (SP21) is six cun under the axilla; Yuanye GB22 is three cun and half under the axilla (Yuanye is a Gallbladder meridian point, three cun under the axilla, connected to the Spleen meridian's Dabao point).
My commentary: Ma Xuantai stated: Zhongfu LU1 is a Lung meridian point. Zhourong (SP20), Xiongxiang (SP19), Tianxi (SP18), and Shidou (SP17) are Spleen meridian points. Qimen LR14 is a Liver meridian point. Below the Liver meridian lie the Spleen meridian points of Fu'ai (SP16), Daheng (SP15), Fujie (SP14), Fushhe (SP13), and Chongmen (SP12), which are four cun and five fen lateral to the midline. The points of these three meridians are connected vertically and horizontally, totaling forty-two points on both sides.
Figure of the Foot-Taiyin Spleen Meridian