（《证类》）
【气味】至冷。
【主治】涂汤火疮（《证类》）。疗妊娠热病，取敷心下及丹田，可护胎气（时珍）。
【附方】新五。
头风热痛∶井底泥和大黄、芒硝末，敷之。（《千金方》）
胎衣不下∶井底泥，以鸡子大，井华水服，即下。（《集玄方》）
卧忽不寤∶勿以火照，但痛啮其踵及足拇趾甲际，而多唾其面，以井底泥涂其目，令人
垂头入井中，呼其姓名，便苏也。（《肘后方》）
小儿热疖∶井底泥敷其四围。（《谈野翁方》）
蜈蚣螫人∶井底泥频敷之。（《千金方》）
（《纲目》）
【释名】乌叠泥（《纲目》）、孩儿茶。
时珍曰∶乌爹，或作乌丁，皆番语，无正字。
【集解】时珍曰∶乌爹泥，出南番爪哇、暹罗、老挝诸国，今云南等地造之。云是细茶
末入竹筒中，坚塞两头，埋污泥沟中，日久取出，捣汁熬制而成。其块小而润泽者，为上；
块大而焦枯者，次之。
【气味】苦、涩，平，无毒。
【主治】清上膈热，化痰生津。涂金疮、一切诸疮，生肌定痛，止血收湿（时珍）。
【附方】新八。
鼻渊流水∶孩儿茶末，吹之，良。（《本草权度》）
牙疳口疮∶孩儿茶、硼砂等分。为末搽之。《积德堂方》∶治走马牙疳，用孩儿茶、雄黄、
贝母等分。为末，米泔漱净搽之。
下疳阴疮∶外科用孩儿茶末，米泔洗净，敷之神效。或加胡黄连等分。《纂奇方》∶孩儿
茶一钱，珍珠一分，片脑半分，为末敷之。唐氏用孩儿茶一钱，轻粉一分，片脑一字。为末
搽之。
痔疮肿痛∶孩儿茶、麝香为末，唾津调敷。（孙氏《集效方》）
脱肛气热∶孩儿茶二分，熊胆五分，片脑一分。为末，人乳搽肛上，热汁自下而肛收也。
亦治痔疮。（董炳方）
（出自《证类本草》）
【气味】性质极冷。
【主治】涂抹于烫伤和火烧的伤口上（《证类本草》）。治疗妊娠期间的热病，取适量敷在心下及丹田部位，可以保护胎气（李时珍）。
【附方】新增五种。
头风热痛：将井底泥与大黄、芒硝的粉末混合，敷在患处。（《千金方》）
胎衣不下：取井底泥如鸡蛋大小，用清晨第一次汲取的井水送服，胎衣即可排出。（《集玄方》）
突然昏厥不醒：不要用火光照视，只需用力咬其脚后跟及足大脚趾甲边缘，并多向其面部吐唾沫，再用井底泥涂抹其眼睛，让人将其头部垂入井中，呼唤其姓名，患者便会苏醒。（《肘后备急方》）
小儿热疖：用井底泥敷在疖肿周围。（《谈野翁方》）
蜈蚣螫伤：频繁用井底泥敷在伤口处。（《千金方》）
（出自《本草纲目》）
【释名】乌叠泥（《本草纲目》）、孩儿茶。
李时珍说：乌爹，有时写作乌丁，都是外语译音，没有固定的汉字写法。
【集解】李时珍说：乌爹泥产于南洋爪哇、暹罗、老挝等国，现在云南等地也有制作。说是将细茶末装入竹筒中，两头紧紧塞住，埋入污泥沟中，日久取出，捣碎成汁并熬制而成。块小且润泽的为上品；块大且焦枯的为次品。
【气味】味苦、涩，性平，无毒。
【主治】清除上焦胸膈的热邪，化痰生津。涂抹于金创刀伤及一切疮疡，能生肌定痛，止血收湿（李时珍）。
【附方】新增八种。
鼻渊流涕：将孩儿茶的粉末吹入鼻腔，效果良好。（《本草权度》）
牙疳口疮：孩儿茶与硼砂等量。研为粉末搽涂患处。《积德堂方》：治疗走马牙疳，用孩儿茶、雄黄、贝母等量。研为粉末，用米泔水漱口洁净后搽涂。
下疳阴疮：外科使用孩儿茶粉末，用米泔水洗净患处，敷上神效。或者加入胡黄连等量。《纂奇方》：孩儿茶一钱，珍珠一分，片脑（冰片）半分，研为粉末敷用。唐氏用法：孩儿茶一钱，轻粉一分，片脑一字。研为粉末搽涂。
痔疮肿痛：孩儿茶、麝香研为粉末，用唾液调和后敷贴。（孙氏《集效方》）
脱肛气热：孩儿茶二分，熊胆五分，片脑一分。研为粉末，用人乳调和搽涂肛门上方，热气自下而泄，肛门即可收回。也用于治疗痔疮。（董炳方）
(From *Zhenglei Bencao*)
[Properties and Flavors] Extremely cold in nature.
[Indications] Apply to burns and scalds (*Zhenglei Bencao*). Treat febrile diseases during pregnancy by applying to the epigastrium and Dantian (Lower Abdomen) to protect fetal Qi (Li Shizhen).
[Additional Formulas] Five new formulas.
Head wind with heat and pain: Mix well-bottom mud with powdered Rhizoma Polygoni Cuspidati (Dahuang, 大黄) and Natrii Sulfas (Mangxiao, 芒硝), and apply externally. (*Qianjin Fang*)
Retained placenta: Take well-bottom mud the size of a chicken egg, swallow with water drawn from a well at dawn, and the placenta will be expelled. (*Jixuan Fang*)
Sudden coma/unconsciousness: Do not use fire to illuminate. Instead, bite firmly at the heel and the edge of the big toenail, spit frequently onto the face, apply well-bottom mud to the eyes, lower the head into the well, call out the person's name, and they will regain consciousness. (*Zhouhou Beiji Fang*)
Pediatric hot furuncle: Apply well-bottom mud around the periphery of the boil. (*Tanyeweng Fang*)
Centipede bite: Frequently apply well-bottom mud to the wound. (*Qianjin Fang*)
(From *Bencao Gangmu*)
[Names] Wudie Ni (*Bencao Gangmu*), Hai'er Cha (Child's Tea).
Li Shizhen states: "Wudie" is sometimes written as "Wuding"; both are transliterations from foreign languages without standard Chinese characters.
[Collection and Explanation] Li Shizhen states: Wudie Ni originates from foreign lands such as Java, Siam, and Laos, and is now also produced in Yunnan and other regions. It is said to be made by packing fine tea powder into bamboo tubes, sealing both ends tightly, burying them in muddy ditches for a long time, then retrieving them, crushing into juice, and boiling/concentrating. Those that are small and moist/lustrous are of superior quality; those that are large and scorched/dry are inferior.
[Properties and Flavors] Bitter, astringent, neutral in temperature, non-toxic.
[Indications] Clears heat from the upper jiao (chest and diaphragm), transforms phlegm, and generates fluids. Applied to traumatic wounds and all types of sores/ulcers, it promotes tissue regeneration, relieves pain, stops bleeding, and absorbs dampness (Li Shizhen).
[Additional Formulas] Eight new formulas.
Ozena (chronic rhinitis with foul discharge): Blow powdered Hai'er Cha (Child's Tea) into the nasal cavity; effective. (*Bencao Quandu*)
Gum gangrene and mouth ulcers: Equal parts Hai'er Cha (Child's Tea) and Borax. Grind into powder and apply topically. *Jidetang Fang*: For treating rapid-onset gum gangrene (Zouma Ya Gan), use equal parts Hai'er Cha (Child's Tea), Realgar (Xionghuang, 雄黄), and Fritillariae Bulbus (Beimu, 贝母). Grind into powder, rinse the mouth clean with rice wash water, and apply.
Chancres and genital ulcers: In surgery, use Hai'er Cha (Child's Tea) powder, clean the area with rice wash water, and apply for miraculous effect. Alternatively, add equal parts Radix Picrorhizae Scrophulariiflorae (Huhuanglian, 胡黄连). *Zuanqi Fang*: Hai'er Cha (Child's Tea) 1 qian, Pearl 1 fen, Borneolum Syntheticum (Pian Nao, 片脑) 0.5 fen, grind into powder and apply. Tang's method: Hai'er Cha (Child's Tea) 1 qian, Calomelas (Qingfen, 轻粉) 1 fen, Borneolum Syntheticum (Pian Nao, 片脑) 1 zi. Grind into powder and apply.
Hemorrhoids with swelling and pain: Hai'er Cha (Child's Tea) and Moschus (Shexiang, 麝香) ground into powder, mixed with saliva, and applied topically. (Sun's *Jixiao Fang*)
Rectal prolapse with qi-heat: Hai'er Cha (Child's Tea) 2 fen, Bear Gallbladder (Xiongdan, 熊胆) 5 fen, Borneolum Syntheticum (Pian Nao, 片脑) 1 fen. Grind into powder, mix with human milk, and apply to the upper anus; the heat fluid will drain downward, and the anus will retract. Also treats hemorrhoids. (Dong Bing's formula)