统属手少阴心经（《灵枢》曰∶舌者，心之官也。故心病者，舌卷短，颧赤。又曰∶心气
通于舌，心和则舌能知味矣。又曰∶人之自啮舌者，此厥气走上，脉气 至也。少阴气至则啮舌。《素问》曰∶
心脉搏坚而长，当病舌卷不能言。乔岳曰∶心绝，则舌不能收、及不能语。一曰∶舌无故常自痹者，勿便作
风治，由心血之不足也，理中汤加当归主之）。又属足太阴脾经（《灵枢》曰∶足太阴之脉，上膈挟咽，连舌
本，散舌下。是动则病舌本强，所生病者舌本痛。又曰∶足太阴之正，贯舌中。又曰∶刺舌下中脉太过，血出
不止为 。注∶舌下脉者，脾脉也。《素问》曰∶中央黄色，入通于脾，故病在舌本。东垣曰∶舌者，心也，
复能知味，是舌中有脾也。孙景思曰∶舌者，心气之所主，脾脉之所通。二脏不和，风邪中之，则舌强不能言；
壅热攻之，则舌肿不能转。更有重舌、木舌、舌肿出血者，皆由心脾二经，风热所乘而然也）。兼属足阳明
胃经（张鸡峰曰∶脾胃主四肢，其脉连舌本，而络于唇口。胃为水谷之海，脾气磨而消之，由是水谷之精，化
为营卫，以养四肢。若起居失节，饮食不时，则脾胃之气不足，而营卫之养不周，风邪乘虚而干之，则四肢与
唇口俱痹，语言蹇涩，久久不治，变为痿疾。经云∶治痿独取阳明，谓足阳明也。治法亦多用脾胃药，少服去风
药则可安矣）。又属手少阳三焦经（《灵枢》曰∶手少阳之筋，其支者当曲颊，入系舌本，其病舌卷。《素问》
曰∶邪客于手少阳之络，令人喉痹舌卷，口干心烦）。又属足少阴肾经（《灵枢》曰∶足之少阴，上系于舌，
络于横骨，终于会厌。又
曰∶舌纵涎下烦 ，取足少阴。《素问》曰∶刺足少阴脉，重虚出血，为舌难以言。又曰∶伤寒五日，少阴受
之，故口燥舌干而渴。《玄珠》曰∶舌之下窍，肾之津液所朝也。东垣曰∶下窍，廉泉穴，一名舌本，在颔下
结喉上，足少阴也。治舌下肿，难言，舌纵，涎出，口噤，舌根急缩，下食难）。又属足厥阴肝经（《灵枢》
曰∶肝者筋之合也，筋者聚于阴器，而脉络于舌本。《素问》曰∶厥阴络者，中热嗌干，善溺心烦，甚则舌卷、
卵上缩而终矣。沈承之曰∶舌主五味，以营养于身，资于脾，以分津液于五脏。故心之本脉，系于舌根；脾之
本脉，系于舌旁；肝脉，循阴器，络舌本）。
舌部病症统属于手少阴心经（《灵枢》记载：舌是心的官窍。所以心病患者，会出现舌头卷缩短小、颧骨部位发红。又说：心气通达于舌，心气调和则舌能辨别滋味。又说：人无故咬伤舌头，这是因为厥逆之气上行，脉气随之到达所致。少阴经气上至则咬舌。《素问》记载：心脉搏动坚实而长，应当发生舌头卷缩不能言语的病证。乔岳说：心气绝败，则舌头不能收缩自如，且不能说话。另一种说法：舌头无故经常麻木不仁的，不要立即当作风病治疗，这是由于心血不足引起的，用理中汤加当归主治）。舌部又属于足太阴脾经（《灵枢》记载：足太阴脾经的经脉，向上穿过膈肌，夹持咽喉，连接舌根，散布在舌下。这条经脉发生变动就会病见舌根僵硬，其所产生的疾病包括舌根疼痛。又说：足太阴脾经的正经，贯穿舌中。又说：针刺舌下中间的血脉如果过度，导致出血不止，会造成……注：舌下的血脉，就是脾经的脉络。《素问》记载：中央对应黄色，内通于脾，所以病位在舌根。李东垣说：舌虽然由心所主，又能辨别滋味，是因为舌中有脾的作用。孙景思说：舌是心气所主宰，也是脾脉所通达之处。心和脾两脏功能不和，风邪侵入其中，就会导致舌强直不能说话；热邪壅盛攻冲，就会导致舌肿胀不能转动。更有重舌、木舌、舌肿出血等症，都是由心脾二经受风热邪气侵袭所致）。舌部兼属于足阳明胃经（张鸡峰说：脾胃主管四肢，其经脉连接舌根，并联络唇口。胃是水谷之海，脾气研磨消化水谷，因此水谷的精微物质，转化为营气和卫气，来滋养四肢。如果起居没有节制，饮食不按时，那么脾胃之气就会不足，营卫的滋养就不周全，风邪乘虚侵入，就会导致四肢和唇口都麻木不仁，语言蹇涩，时间久了不治疗，会转变为痿证。经书说：治疗痿证唯独取法阳明经，指的是足阳明胃经。治疗方法也多使用调理脾胃的药物，少量服用祛风药就可以安愈了）。舌部又属于手少阳三焦经（《灵枢》记载：手少阳三焦经的筋，其分支在曲颊处，进入系连舌根，其病变表现为舌头卷缩。《素问》记载：邪气客居在手少阳三焦经的络脉，令人喉痹、舌头卷缩、口干、心烦）。舌部又属于足少阴肾经（《灵枢》记载：足少阴肾经，向上系连于舌，联络横骨，终止于会厌。又说：舌体纵缓流涎、烦躁不安，应取足少阴经穴位治疗。《素问》记载：针刺足少阴经脉，若造成严重的虚损并出血，会导致舌头难以言语。又说：伤寒病第五天，少阴经受邪，所以出现口燥、舌干而渴的症状。《玄珠》记载：舌下的孔窍，是肾之津液汇聚的地方。李东垣说：下窍即廉泉穴，又名舌本，位于下巴下方、喉结上方，属于足少阴肾经。用于治疗舌下肿胀、言语困难、舌体纵缓、流涎、口噤不开、舌根紧急收缩、吞咽困难等症状）。舌部又属于足厥阴肝经（《灵枢》记载：肝是筋的聚合之处，筋聚集于生殖器，而脉络联系于舌根。《素问》记载：厥阴经的络脉，若体内有热则咽干，多尿、心烦，严重时则舌头卷缩、睾丸上缩而死亡。沈承之说：舌主管五味，用来营养身体，依赖于脾，将津液分输到五脏。所以心的本经脉络，系连于舌根；脾的本经脉络，系连于舌旁；肝的经脉，循行经过生殖器，联络舌根）。
The tongue is primarily associated with the Hand Shaoyin Heart Meridian (Ling Shu states: "The tongue is the organ of the Heart." Therefore, in Heart diseases, one may observe a curled and shortened tongue, along with redness of the cheekbones. It further states: "Heart Qi connects to the tongue; when Heart Qi is harmonious, the tongue can perceive flavors." Another passage notes: "When a person bites their own tongue without cause, it is due to Jue Qi ascending and pulse Qi arriving. When Shaoyin Qi arrives, biting occurs." Su Wen records: "If the Heart pulse is firm and long, the patient will suffer from a curled tongue and inability to speak." Qiao Yue stated: "When Heart Qi fails, the tongue cannot retract properly, and speech becomes impossible." An alternative view suggests: "If the tongue is frequently numb without apparent cause, do not immediately treat it as wind-stroke; this is caused by insufficiency of Heart Blood, treated with Lizhong Tang added with Danggui)." The tongue is also associated with the Foot Taiyin Spleen Meridian (Ling Shu states: "The Foot Taiyin meridian ascends through the diaphragm, flanks the pharynx, connects to the root of the tongue, and scatters beneath it. When this meridian is disturbed, disease manifests as stiffness of the tongue root; generated diseases include pain at the tongue root. It also states: 'The regular pathway of Foot Taiyin penetrates the middle of the tongue.' Furthermore: 'Excessive needling of the central vessel under the tongue causing unceasing bleeding leads to [complications].' Note: The vessels under the tongue are the Spleen meridians. Su Wen states: 'The center corresponds to yellow and communicates internally with the Spleen; thus, diseases manifest at the tongue root.' Li Dongyuan said: "Although the tongue is governed by the Heart and perceives flavors, it contains the function of the Spleen." Sun Jingsi stated: "The tongue is dominated by Heart Qi and connected by Spleen pulses. Disharmony between these two zang organs allows Wind Pathogen to invade, resulting in tongue stiffness and aphasia; if Heat obstructs and attacks, the tongue swells and becomes immobile. Conditions such as double tongue, wooden tongue, and bleeding swollen tongue are all caused by Wind-Heat invading the Heart and Spleen meridians)." The tongue is additionally associated with the Foot Yangming Stomach Meridian (Zhang Jifeng stated: "Spleen and Stomach govern the four limbs; their meridians connect to the tongue root and link to the lips and mouth. The Stomach is the Sea of Water and Grain; the Spleen grinds and digests it, transforming the essence of water and grain into Ying and Wei Qi to nourish the four limbs. If daily routines are irregular and meals are untimely, Spleen and Stomach Qi become insufficient, and Ying-Wei nourishment is incomplete. Wind Pathogen then invades the deficiency, causing numbness in the four limbs and lips/mouth, and slurred speech. If untreated for a long time, this transforms into Wei Syndrome. The classics state: 'In treating Wei Syndrome, exclusively select the Yangming,' referring to the Foot Yangming. Treatment methods often use Spleen-Stomach herbs, with minimal wind-dispelling agents, which can bring relief)." The tongue is also associated with the Hand Shaoyang Sanjiao Meridian (Ling Shu states: "The sinews of the Hand Shaoyang have branches at the curved jaw, entering to tie the tongue root; their pathology involves tongue curling. Su Wen states: 'When Evil lodges in the Luo vessels of the Hand Shaoyang, it causes throat obstruction, tongue curling, dry mouth, and mental restlessness')." The tongue is also associated with the Foot Shaoyin Kidney Meridian (Ling Shu states: "Foot Shaoyin ascends to tie the tongue, links to the transverse bone, and terminates at the epiglottis. It also says: 'For tongue protrusion with drooling and irritability, take Foot Shaoyin points.' Su Wen records: 'Needling Foot Shaoyin vessels, if causing severe deficiency and bleeding, results in difficulty speaking.' It further states: 'On the fifth day of Cold Damage, Shaoyin is affected, leading to dry mouth, dry tongue, and thirst.' Xuan Zhu states: "The orifices beneath the tongue are where Kidney fluids gather." Li Dongyuan said: "The lower orifice is Lianquan acupoint, also known as Sheben, located below the chin above the laryngeal prominence, belonging to Foot Shaoyin. It treats sublingual swelling, dysphemia, tongue protrusion, drooling, trismus, tongue root retraction, and difficulty swallowing)." The tongue is also associated with the Foot Jueyin Liver Meridian (Ling Shu states: "The Liver is the union of sinews; sinews gather at the genitalia and network to the tongue root. Su Wen states: 'Jueyin Luo vessels... internal heat causes dry throat, frequent urination, and irritability; severely, it leads to tongue curling and testicular retraction, ending in death.' Shen Chengzhi stated: "The tongue governs the five flavors to nourish the body, relying on the Spleen to distribute fluids to the five zang organs. Thus, the primary meridian of the Heart ties to the tongue root; the primary meridian of the Spleen ties to the sides of the tongue; the Liver meridian circulates through the genitalia and networks to the tongue root)."