（《拾遗》）
【集解】藏器曰∶甘土，出安西及东京龙门。土底澄取之，洗腻服如灰，水和涂衣，去
油垢。
【气味】无毒。
【主治】草药及诸菌毒，热汤调末服之（藏器）。
（《纲目》）
【气味】甘，温，无毒。
【主治】主汤火伤，研末涂之（时珍）。
【附方】新三。牙宣疳 ∶赤土、荆芥叶同研，揩之，日三次。（《普济方》）
风疹瘙痒甚，不能忍者。赤土研末，空心温酒服一钱。（《御药院方》）
身面印文刺破∶以醋调赤土敷之，干又易，以黑灭为度。（《千金方》）
（《拾遗》）
【释名】藏器曰∶张司空言∶三尺以上，曰粪；三尺以下，曰土。凡用，当去上恶物，
勿令入客水。
【气味】甘，平，无毒。
藏器曰∶土气久触，令人面黄。掘土犯地脉，令人上气身肿。掘土犯神杀，令人生肿毒。
【主治】泄痢冷热赤白，腹内热毒绞结痛，下血。取干土，水煮三、五沸，绞去滓，暖
服一、二升。又解诸药毒，中肉毒，合口椒毒，野菌毒（藏器）。
【发明】时珍曰∶按刘 《钱乙传》云∶元丰中，皇子仪国公病螈 ，国医未能治，长
公主举乙入，进黄土汤而愈。神宗召见，问黄土愈疾之状。乙对曰∶以土胜水，木得其平，
则风自退尔。上悦，擢太医丞。又《夷坚志》云∶吴少师得疾，数月消瘦，每日饮食入咽，
如万虫攒攻，且痒且病，皆以为劳瘵，迎明医张锐诊之。锐令明旦勿食，遣卒诣十里外，取
行路黄土至，以温酒二升搅之，投药百粒饮之。觉痛几不堪，及登溷，下马蝗千余，宛转，
其半已困死，吴亦惫甚，调理三日乃安。因言夏月出师，燥渴，饮涧水一杯，似有物入咽，
遂得此病。锐曰∶虫入人脏，势必孳生，饥则聚咂精血，饱则散处脏腑。苟知杀之而不能扫
取，终无益也。是以请公枵腹以诱之，虫久不得土味，又喜酒，故乘饥毕集，一洗而空之。
公大喜，浓赂谢之，以礼送归。
【附方】旧二，新十。
小儿吃土∶用干黄土一块，研末，浓煎黄连汤调下。《救急方》
乌纱惊风∶小儿惊风，遍身都乌者。急推向下，将黄土一碗，捣末，入久醋一钟，炒热
包定熨之，引下至足，刺破为妙。（《小儿秘诀》）
卒患心痛∶画地作王字，撮取中央土，水和一升服，良。（陈藏器《本草》）
目卒无见∶黄土搅水中，澄清洗之。（《肘后方》）
牛马肉毒及肝毒。取好土三升，水煮，清一升服，即愈。一方∶入头发寸截和之，发
皆贯肝而出也。（《肘后方》）
内痔痛肿∶朝阳黄土、黄连末、皮硝各一两。用猪胆汁同研如泥，每日旋丸枣大，纳入
肛内，过一夜，随大便去之。内服乌梅、黄连二味丸药。（孙氏《集效方》）
颠扑欲死，一切伤损，从高坠下，及木石所迮，落马扑车，淤血凝滞，气绝欲死者，亦
活。用净土五升蒸热，以故布重裹作二包，更互熨之。勿大热，恐破肉，取痛止则已，神效
之方。（孙真人《千金方》）
杖疮未破∶干黄土末，童尿入鸡子清调涂刷上，干即上，随以热水洗去，复刷复洗，数
十次，以紫转红为度。仍刷两胯，以防血攻阴也。（《摄生方》）
汤火伤灼∶醋调黄土，涂之。（《谈野翁方》）
蜈蚣螫伤∶画地作王字，内取土掺之，即愈。（《集简方》）
蜂蚁叮螫∶反手取地上土敷之，或入醋调。（《千金方》）
蠼 尿疮∶画地作蠼 形，以刀细取腹中土，唾和涂之，再涂即愈。孙真人云∶予得此
疾，经五、六日不愈，或教此法，遂瘳。乃知万物相感，莫晓其由也。（《千金方》）
(From *Bencao Shiyi* / Supplement to Materia Medica)
[Ji Jie / Collected Explanations] Chen Cangqi stated: Gantu (Sweet Earth) is produced in Anxi and Longmen of Dongjing. It is obtained by clarifying the bottom layer of soil, washed until fine like ash for consumption, or mixed with water to coat clothes to remove oil stains.
[Qi Wei / Odor and Taste] Non-toxic.
[Zhu Zhi / Indications] Treats poisoning from herbs and various fungi; take powdered earth mixed with hot water orally (Chen Cangqi).
(From *Bencao Gangmu* / Compendium of Materia Medica)
[Qi Wei / Odor and Taste] Sweet, warm, non-toxic.
[Zhu Zhi / Indications] Mainly treats scalds and burns; apply powdered earth externally (Li Shizhen).
[Fu Fang / Supplementary Prescriptions] Three new prescriptions.
Ya Xuan Gan Chuang (Gum disease with ulcers): Grind Chitu (Red Earth) together with Jingjie Ye (Schizonepeta Leaf), apply to the affected area three times a day. (*Puji Fang*)
Feng Zhen Sao Yang (Wind rash with severe itching): For unbearable itching due to wind rash, grind Chitu into powder, take one qian orally on an empty stomach with warm wine. (*Yuyao Yuan Fang*)
Shen Mian Yin Wen Ci Po (Broken tattoo marks on body and face): Mix Chitu with vinegar, apply to the area, replace when dry, continue until the black pigment disappears. (*Qianjin Fang*)
(From *Bencao Shiyi* / Supplement to Materia Medica)
[Shi Ming / Explanation of Names] Chen Cangqi stated: Zhang Sikong said: Soil above three chi is called Fen (excrement/waste); soil below three chi is called Tu (earth). When using Huangtu (Yellow Earth), remove the upper foul matter to prevent it from mixing into Ke Shui (external/foreign water).
[Qi Wei / Odor and Taste] Sweet, neutral, non-toxic.
Chen Cangqi stated: Long-term contact with earth qi causes yellow complexion. Disturbing the earth violates the Di Mai (Earth Veins), causing Qi rebellion and body swelling. Disturbing the earth violates spiritual taboos, causing people to develop swelling and sores.
[Zhu Zhi / Indications] Treats cold-heat dysentery, red-and-white dysentery, heat toxin accumulation in the abdomen causing cramping pain, and hematochezia. Take dry earth, boil in water for three to five boils, filter out the dregs, and drink one to two sheng while warm. It also antidotes various drug poisonings, meat poison, Hekou Jiao Du (Aconite poison), and wild mushroom poison (Chen Cangqi).
[Fa Ming / Enlightenment] Li Shizhen stated: According to Liu Fang's *Biography of Qian Yi*: During the Yuanfeng era, Prince Yi Guo suffered from convulsions (Yong). Imperial physicians could not cure him. The Eldest Princess recommended Qian Yi, who prescribed Huangtu Tang (Yellow Earth Decoction), resulting in recovery. Emperor Shenzong summoned Qian Yi and asked about the mechanism of curing illness with yellow earth. Qian Yi replied: "Earth overcomes Water; when Wood achieves balance, Wind naturally recedes." The Emperor was pleased and promoted him to Ta Yi Cheng.
Furthermore, according to *Yijian Zhi*: Minister Wu Shaoshi fell ill, wasting away for months. Every time food entered his throat, he felt as if ten thousand insects were attacking, causing both itching and pain. Everyone diagnosed it as Lao Zhai (consumption/tuberculosis) and invited the famous physician Zhang Rui. Zhang Rui instructed him to fast the next morning, sent soldiers to fetch Yellow Earth from a public road ten li away, stirred it with two sheng of warm wine, and administered one hundred pills. The patient felt unbearable pain, but upon defecating, expelled over a thousand Ma Huang (horse leeches/parasites), writhing, half of which were dead. Wu Shaoshi was exhausted but stabilized after three days of recuperation. Zhang Rui explained: "In summer, while campaigning, you drank a cup of stream water due to dryness and thirst, and something entered your throat, causing this disease. Parasites entering the viscera will inevitably multiply. When hungry, they gather to suck essence and blood; when full, they disperse in the organs. Merely killing them without removing them is useless. Therefore, I asked you to fast to lure them. Deprived of the taste of earth for long and attracted by wine, they gathered all at once when hungry, allowing for a complete washout." The minister was greatly pleased, rewarded him generously, and sent him back with courtesy.
[Fu Fang / Supplementary Prescriptions] Two old prescriptions, ten new ones.
Xiao Er Chi Tu (Child eating earth癖): Use a piece of dry Yellow Earth, grind into powder, and take with strong decoction of Huanglian Tang (Coptis Decoction). (*Jiuji Fang*)
Wu Sha Jing Feng (Black Wind Convulsion): For infantile convulsion where the whole body turns black, urgently push downwards. Take one bowl of Yellow Earth, grind into powder, add one zhong of aged vinegar, stir-fry until hot, wrap in cloth, and apply as a compress to guide the pathogen down to the feet. Pricking the skin is advisable. (*Xiao'er Mijue*)
Zu Huan Xin Tong (Sudden Heart Pain): Draw a "Wang" character on the ground, scoop the central earth, mix with water, and drink one sheng. Effective. (Chen Cangqi *Bencao*)
Mu Zu Wu Jian (Sudden Blindness): Stir Yellow Earth in water, clarify, and use to wash the eyes. (*Zhouhou Fang*)
Niu Ma Rou Du Ji Gan Du (Poison from Ox/Horse Meat and Liver Poison): Take three sheng of good earth, boil in water, and drink one sheng of the clear liquid for immediate recovery. Another method: Add one-cun cut human hair during boiling, as hair connects to the Liver and expels toxins. (*Zhouhou Fang*)
Nei Zhi Tong Zhong (Internal Hemorrhoid Swelling and Pain): Use one liang each of Chaoyang Huangtu (Sun-facing Yellow Earth), Huanglian Mo (Coptis Powder), and Pixiao (Mirabilite). Grind together with Pig Gallbladder Juice (Zhudan Zhi) into a paste. Form pills the size of a jujube daily, insert into the anus, remove after one night with stool. Internally take pills made of Wumei (Mume Fruit) and Huanglian (Coptis). (Sun Shi *Jixiao Fang*)
Dian Puo Yu Si (Severe Trauma/Fall): For all injuries, falls from height, crushing by wood/stone, falling from horses/carriages, with stagnant blood and near-death state, revive using this method. Steam five sheng of pure earth, wrap in old cloth to make two packs, and alternate applying hot compresses. Do not make too hot to avoid burning skin. Stop when pain ceases. This is a miraculous prescription. (Sun Simiao *Qianjin Fang*)
Zhang Chuang Wei Po (Bruise from beating not yet broken): Dry Yellow Earth powder, mix with Tong Niao (Boy's Urine) and Ji Zi Qing (Egg White), apply to the area. Reapply when dry, wash off with hot water, repeat dozens of times until purple turns red. Also apply to both groins to prevent blood attacking the yin. (*Shesheng Fang*)
Tang Huo Shang Zhuo (Scald and Burn): Mix Yellow Earth with vinegar, apply to the burn. (*Tan Yeweng Fang*)
Wu Gong She Shang (Centipede Bite): Draw a "Wang" character on the ground, take earth from inside, and sprinkle on the wound. Immediate recovery. (*Jijian Fang*)
Feng Yi Ding She (Bee/Ant Sting): Take earth from the ground with the back of the hand, apply to the sting, or mix with vinegar. (*Qianjin Fang*)
Qu Niao Chuang (Urticaria-like sore): Draw the shape of Qu Niao (a mythical creature) on the ground, carefully scrape earth from the center with a knife, mix with saliva, and apply. Apply again for recovery. Sun Simiao said: "I suffered from this ailment for five or six days without healing. Someone taught me this method, and it cured me. Thus I know that all things interact mutually, though I do not understand the reason." (*Qianjin Fang*)